Question

1+5(2x+3)=6
4-3(5x-1)=22
5x+2(4-x)=x
4y-3(3y-5)=2y
proszę o pomoc daje naj szybko

Answer 1

1 + 5 ( 2x + 3) = 6
1 + 10x + 15 = 6
10x = 6 - 1 - 15
10 x = - 10 / : 10
x = - 1


4 - 3(5x - 1) = 22
4 - 15x + 3 = 22
- 15x = 22 - 4 - 3
- 15 x = 15
x = - 1 / : 15

5x + 2 (4 - x) = x
5x +  8 - 2x = x
5x - 2x - x = - 8
2x = - 8 / : 2
x = - 4

4y - 3 ( 3y - 5) = 2 y
4y - 9y + 15 = 2y
4y - 9y - 2y = - 15
- 7 y = - 15 / :7
y = 15/7
y = 2  1/7