Question

Срочно надооооооо!!!!

Answer 1

3)
$3( \times - 7) + 2= 4x - 6 \\ 3x - 21 + 2 = 4x - 6 \\ 3x - 4x = - 6 + 21 - 2 \\ - x = 13 \\ x = - 13$
$- 2(3x + 1) - 6 = 7 - 2x \\ - 6x - 2 - 6 = 7 - 2x \\ - 6x + 2x = 7 + 2 + 6 \\ - 4x = 15 \\ x = - \frac{15}{4}$
4)
$y = - 4x + 5 \\ x= - 1.5 \\ y = - 4 \times - 1.5 + 5 \\ y = 6 + 5 \\ y = 11$