-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 *(-x+)=4,5 -(-x + ) = 4,5 x - = 4,5 x - = 4,5 |*40 36x - 24 = 180 36x=204 x = x = 5