Решите уравнения : 1) 7 * ( х + 8 ) - 25 = 66 2) 9 * ( 5х +13 ) = 252 3) 15 * ( 13х - 7 ) = 285 4) ( у + 46 ) / 3 = 18 5) ( 2х + 39 ) / 5 = 13 6) 182 / ( х - 15 ) = 14

1)
7 * ( х + 8 ) - 25 = 66
7x+56-25=66
7x+31=66
7x=66-31
7x=35
x=35:7
x=5

2)
9 * ( 5х +13 ) = 252
45x+117=252
45x=252-117
45x=135
x=135:45
x=3

3)
15 * ( 13х - 7 ) = 285
195x-105=285
195x=285+105
195x=390
x=390:195
x=2

4)
( у + 46 ) / 3 = 18
y+46=18*3
y+46=54
y=54-46
y=8

5)
( 2х + 39 ) / 5 = 13
2x+39=13*5
2x+39=65
2x=65-39
2x=26
x=26:2
x=13

6)
182 / ( х - 15 ) = 14
x-15=182:14
x-15=13
x=13+15
x=28