0.7(2×-9y)-4(0.25×-y).если ×=0.7.y=-0.4

Question

0.7(2×-9y)-4(0.25×-y).если ×=0.7.y=-0.4

Answer 1

1,4x - 6,3y - 1x + 4y = 0,4x - 2,3y

0,4*0,7 - 2,3*(-0,4) = 0,28+ 0,92 = 1,2