X-120=912:34980-x=201*10 x+85=350+150 775+x=5741-85 x-12=75:3 45-x=11+7 x+39=768*4 89+x=678956-87 x-27=78+14600-x=81:9 x+29=56744:2899+x=4532-631x-16=96-2876854-x=30*100 x+3716=4650+1856 67+x=228:4 x-54=506-10214000-x=68*9 x+64...

х - 120 = 912 :3 х - 120 = 304 х = 304 + 120 х = 424 --------------------------- 424 - 120 = 912 : 3           304 = 304 4980 - х = 201 * 10 4980 - х = 2010 х = 4980 - 2010 х = 2970 ---------------------------------- 4980 - 2970 = 201 * 10             2010 = 2010 х + 85 = 350 + 150 х + 85 = 500 х = 500 - 85 х = 415 -------------------------------------- 415 + 85 = 350 + 150         500 = 500 775 + х = 5741 - 85 775 + х = 5656 х = 5656 - 775 х = 4881 ----------------------------------- 775 + 4881 = 5741 - 85            5656 = 5656 х - 12 = 75 : 3 х - 12 = 25 х = 25 + 12 х = 37 -------------------------------- 37 - 12 = 75 : 3         25 = 25 45 - х = 11 + 7 45 - х = 18 х = 45 - 18 х = 27 -------------------------------- 45 - 27 = 11 + 7         18 = 18 х + 39 = 768 * 4 х + 39 = 3072 х = 3072 - 39 х = 3033 -------------------------------- 3033 + 39 = 768 * 4          3072 = 3072 89 + х = 678956 - 87 89 + х = 678869 х = 678869 - 89 х = 678780 --------------------------------------------- 89 + 678780 = 678956 - 87 678869 = 678869 х - 27 = 78 + 14 х - 27 = 92 х = 92 + 27 х = 119 -------------------------------- 119 - 27 = 78 + 14          92 = 92 600 - х = 81 : 9  600 - х = 9 х = 600 - 9 х = 591 -------------------------------- 600 - 591 = 81 : 9                9 = 9  х + 29 = 56744 : 2 х + 29 = 28372 х = 28372 - 29 х = 28343 --------------------------------- 28343 + 29 = 56744 : 2          28372 = 28372 899 + х = 4532 - 631 899 + х = 3901 х = 3901 - 899 х = 3002 ------------------------------------------- 899 + 3002 = 4532 - 631            3901 = 3901 х - 16 = 96 - 28 х - 16 = 68 х = 68 + 16 х = 84 ----------------------------- 84 - 16 = 96 - 28         68 = 68 76854 - х = 30 * 100 76854 - х = 3000 х = 76854 - 3000 х = 73854 ------------------------------------- 76854 - 73 854 = 30 * 100                  3000 = 3000 х + 3716 = 4650 + 1856 х + 3716 = 6506 х = 6506 - 3716 х = 2790 ---------------------------------------- 2790 + 3716 = 4650 + 1856              6506 = 6506 67 + х = 228 : 4 67 + х = 57 х =  57 - 67 х = - 10 --------------------------- 67 + (- 10) = 228 : 4              57 = 57 х - 54 = 506 - 102 х - 54 = 404 х = 404 + 54 х = 458 -------------------------------- 458 - 54 = 506 - 102        404 = 404 14000 - х = 68 * 9  1400 - х = 612 х = 1400 - 612 х = 788 ------------------------------- 1400 - 788 = 68 * 9              612 = 612 х + 642 = 805 + 228 х + 642 = 1033 х = 1033 - 642 х = 391 ---------------------------------- 391 + 642 = 805 + 228          1033 = 1033 473 + х = 180 : 6  473 + х = 30 х = 30 - 473 х = - 443 ---------------------------------- 473 + (- 443) = 180 : 6                   30 = 30