Question

1) 6х - 4 = 5х - 11 ; ??


2) 0,3( х -2) = 0,6 + 0,2(х+4) ; ??

Answer 1

1. x = -7
2. x = 20

Explanation:

1) 6x - 4 = 5x - 11 ↓

`\bf\longrightarrow \: 6x - 4 = 5x - 11 \\ \bf\longrightarrow \: 6x - 5x = - 11 + 4 \\ \bf\longrightarrow \: x = - 7`

2) 0.3(x-2) = 0.6 + 0.2(x+4) ↓

`\bf\longrightarrow \: 0.3(x - 2) = 0.6 + 0.2(x + 4) \\ \bf\longrightarrow \: 0.3x - 0.6 = 0.2x + 1.4 \\ \bf\longrightarrow \: 0.3x - 0.2x = 1.4 + 0.6 \\ \bf\longrightarrow \: 0.1x = 2 \\ \bf\longrightarrow \: x = ( \cancel2)/( \cancel0.1) \\ \bf \longrightarrow \: x = 20`