Question

1)4 + х = 5х – 12
2)0,3(8 – 3х) = 3,2 – 0,8(х – 7)

Answer 1

Ответ:

Пошаговое объяснение:

1)4+x=5x-12

5x=5x-12

0=-12

x∈∅

2)0.3(8-3x)=3.2-0.8(x-7)

2.4-0.9x=3.2-0.8x+5.6

2.4-0.9x=8.8-0.8x

-0.9x+0.8x=8.8-2.4

-0.1x=6.4

x=-64