Question

срочно! у меня 15 мин!​

Answer 1

1)

$-2 x - 6 = 2x - 1 \\ -2 x -2 x = - 1 + 6 \\ - 4x = 5 \\ 4x = - 5 \\ x = - 5 \div 4 \\ x = - 1.25$

2)

$4 - 2x = x -5 \\ - 2x - x = - 5 - 4 \\ - 3x = - 9 \\ 3x = 9 \\ x = 9 \div 3 \\ x = 3$

3)

$9x =16 - x \\ 9x + x = 16 \\ 10x = 16 \\ x =1 6 \div 10 \\ x = 1.6$

4)

$3x - 15 = x + 3 \\ 3x - x = 3 + 15 \\ 2x = 18 \\ x = 18 \div 2 \\ x = 9$

5)

$6 - 4y - 1 = y + 3 \\ - 4y - y = 3 - 5 \\ - 5y = - 2 \\ 5y = 2 \\ y = 2 \div 5 \\ y = 0.4$