Ответ(ы) на вопрос:
Гость(-10)*(2+х+у) = -10х -10у -20
(-7)*(a+b+5)= -7a -7b -35
(-9)*(x+7+y) = -9x -9y -63
а) = 20 - 4у - 30 = -4у - 10
б) = -72 - 8х +50 = -8х - 22
в) = 12а + 24 - 10 = 12а + 14
г) = -38 +19х +20 = 19х - 18
е) = -15х - 60 +60 = -15х
д) = 112 - 16а - 90 = 22 - 16а
Гость- 6x (1 + c + d) = - 6c - 6c - 6cx
(-10) (2 + x + у) = - 20 - 10x - 10у
(-7) (а + b + 5) = -7a - 7b - 35
- 9 (x + 7 + y) = - 9x - 63 - 9y
4 (5-y) - 30 = 20 - 4y - 30 = - 4y - 10
-8 (9 + x) + 50 = - 72 - 8x + 50 = - 8x - 12
- 12 (-a - 2) - 10 = 12a + 24 - 10 = 12a + 14
- 19 (2 - x) + 20 = - 38 + 19x + 20 = 19x - 18
- 15 (x + 4) + 60 = - 15x - 60 + 60 = - 15x
16 (7 - a) - 90 = 112 - 16a - 90 = 22 - 16a
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