Question

7*(x+0,4)=5*(x-0,4)=

Answer 1

Объяснение:

$7 \times (x + 0.4) = 5 \times (x - 0.4) \\ 7x + 2.8 = 5x - 2 \\ 7x - 5x = - 2 - 2.8 \\ 2x = - 2 - 2.8 \\ 2x = - 4.8 \\ x = - 2.4$