Question

допоможіть розв'язати рівняння.
7+4(3-y)=5(y+2)

7(x+2)=-14

2(3x-4)=4(x-3)

Answer 1

$7 + 4(3 - y) = 5(y + 2) \\ 7 + 12 - 4y = 5y + 10 \\ 19 - 4y = 5y + 10 \\ - 4y - 5y = 10 - 19 \\ - 9y = - 9 \\ x = 9 \div 9 \\ x = 1$

$7(x + 2) = - 14 \\ x + 2 = - 2 \\ x = - 2 - 2 \\ x = - 4$

$2(3x - 4) = 4(x - 3) \\ 6x + 8 = 4x - 12 \\ 6x - 4x = - 12 + 8 \\ 2x = - 4 \\ x = - 4 \div 2 \\ x = - 2$