Question

решение уравнение:
3,5х-18,3=-6х+0,7
6х-(8х+7)=107
6х-(5х-2)=3(2х+1)
помогите пажалуйста ​

Answer 1

$3.5x - 18.3 = - 6x + 0.7 \\ 3.5x + 6x = 0.7 + 18.3 \\ 9.5x = 19 \\ x = 2$

$6x - (8x + 7) = 107 \\ 6x - 8x - 7 = 107 \\ - 2x - 7 = 107 \\ - 2 = 107 + 7 \\ - 2x = 114 \\ x = - 57$

$6x - (5x - 2) = 3(2x + 1) \\ 6x - 5x + 2 = 6x + 3 \\ - 5x + 2 = 3 \\ - 5x = 3 - 2 \\ - 5x = 1 \\ x = - \frac{1}{5} или - 0.2$