Question

al quem sabe estas equações??
5 (3x-2)=2 (3-x) ou 5 (3x-2)=21(3-x)

4 (x+3)=20

5 (2×-1)=2 (x+4)

2 (3y+1)=11

2 (y-1)+3(y-2)=2

Answer 1

5 (3x-2)=2 (3-x)
15x-10=6-2x
15x+2x=6+10
17x=16
x=16/17

4 (x+3)=20
4x+12=20
4x=20-12
4x=8
x=8/4
x=2

5 (2×-1)=2 (x+4)
10x-5=2x+8
10x-2x=8+5
8x=13
x=13/8

2 (3y+1)=11
6y+2=11
6y=11-2
6y=9
y=9/6
y=3/2

2 (y-1)+3(y-2)=2
2y-2+3y-6=2
2y+3y=2+2+6
5y=10
y=10/5
y=2