Помогите! Нужно решить. :) 1) 4 (2y - 3) = (3y-8) 2) 6 (z+3) = 2 (2z+5) 3) 5 (1-3u) = 20...

Question

Помогите! Нужно решить. :)
1) 4 (2y - 3) = (3y-8)
2) 6 (z+3) = 2 (2z+5)
3) 5 (1-3u) = 20
4) 3 (5-3x) = 6 (x+5)
5) 3 (2y-1) = 9
6) 2 (2z+5) = 3 (5z-4)
7) 6 (3-2v) = 42
8) 5 (s+9) = 3 (3s+19)
9) 15 (2x-3) = 3 (8x-7)

Answer 1

1) 4 (2y - 3) = (3y-8)
8у - 12 - 3у = - 8
5у = 4
у = 0.8
2) 6 (z+3) = 2 (2z+5)
6z + 18 - 4z = 10
2z = - 8
z = - 4
3) 5 (1-3u) = 20
5 - 15u= 20
-15u = 15
u = - 1
4) 3 (5-3x) = 6 (x+5)
15 - 9x - 6x = 30
- 15x = 15
x = - 1
5) 3 (2y-1) = 9
6y - 3 = 9
6y = 12
y = 2
6) 2 (2z+5) = 3 (5z-4)
4z + 10 - 15z = - 12
- 11z = - 22
z = 2
7) 6 (3-2v) = 42
18 - 12v = 42
- 12v = 24
v = - 2
8) 5 (s+9) = 3 (3s+19)
5s + 45 - 9s = 57
- 4s = 12
s = - 3
9) 15 (2x-3) = 3 (8x-7)
30x - 45 - 24x = - 21
6x = 24
x = 4

Comments

Спасибо огромное)