-2 2/5*(-3/8х+1/4)=4,5 решите уравнение

-2 2/5*(-3/8х+1/4)=4,5 -3/8х+1/4=4,5÷(-2 2/5) 1/4-3/8х=-4 5/10÷2 2/5 1/4-3/8х=-45/10÷12/5 1/4-3/8х=-45/10×5/12 1/4-3/8х=-15/2×1/4 1/4-3/8х=-15/8 3/8х=1/4-(-1 7/8) 3/8х=1/4+1 7/8 3/8х=2/8+1 7/8 3/8х=1 9/8 х=1 9/8÷3/8 х=17/8÷3/8 х=17/8×8/3 х=17×1/3 х=17/3 х=5 2/3

-2 [latex] \frac{2}{5} [/latex] *(-[latex] \frac{3}{8} [/latex]x+[latex] \frac{1}{4} [/latex])=4,5 -[latex] \frac{12}{5} [/latex](-[latex] \frac{3}{8} [/latex]x + [latex] \frac{1}{4} [/latex]) = 4,5 [latex] \frac{36}{40} [/latex]x - [latex] \frac{12}{20} [/latex] = 4,5 [latex] \frac{36}{40} [/latex]x - [latex] \frac{24}{40} [/latex] = 4,5 |*40 36x - 24 = 180 36x=204 x = [latex] \frac{17}{3} [/latex] x = 5 [latex] \frac{2}{3} [/latex]