Решите уравнения
1) 8x-7х-10=70
2) 13у+15у-24=60
3) (7х-24): 12+26=31
4) 32+ (136-8х): 4=64
! 1

1)
8х-7х=70+10
Х=80

2)13у+15у=60+24
28у=84
У=3

3) 7х-24/12+26=31 умножим на 12 все равенство
7х-24+312=372
7х=84
Х=12

4)32+ 136-8х/4=64 умножаем все на 4
128+136-8х=256
-8х=256-128-136
-8х=-8
Х=1

Salut !

8x - 7x - 10 = 70

x - 10 = 70

x = 70 + 10

x = 80

13y + 15y - 24 = 60

28y - 24 = 60

28y = 60 + 24

28y = 84

y = 84 : 28

y = 3

( 7x - 24 ) : 12 + 26 = 31

( 7x - 24 ) / 12 + 26 = 31

7x - 24 + 312 = 372

7x + 288 = 372

7x = 372 - 288

7x = 84

x = 84 : 7

x = 12

32 + ( 136 - 8x ) : 4 = 64

32 + ( 126 - 8x ) / 4 = 64

32 + 4( 32 - 2x ) / 4 = 64

32 + 34 - 2x = 64

66 - 2x = 64

- 2x = 64 - 66

- 2x = - 2

x = 1