Question

Помогите решить уравнения
1) 2· (y+4) -12= 5y-7
2) 3a - (4a+8)= 5·(7-a)

Answer 1

1) 2· (y+4) -12= 5y-7
2y+8-12=5y-7
2y-5y=12-7-8
-3y=-3
y=1
2) 3a - (4a+8)= 5·(7-a)
3a-4a-8=35-5a
5a-4a+3a=35+8
4a=43
a=10.75

Answer 2

1. 2y+8-12=5y-7
2y-4=5y-7
-3y=-3
y=1

2. 3a-4a-8=35-5a
-a-8=35-5a
4a=43
a=10.75≈11