1) 5x+3=2x+12
5x-2x=12-3
3x=9
x=9:3
x=3
2) 7(x+2)=5(x+1)+23
7x+7×2=5x+5×1+23
7x+14=5x+5+23
7x-5x=23+5-14
2x=28-14
2x=14
x=14÷2
x=7
3) 2(x+3)=16
2x+2×3=16
2x+6=16
2x=16-6
2x=10
x=10:2
x=5
4) 5x=2x+18
5x-2x=18
3x=18
x=18÷3
x=6
5) 6x-2=2(2x+1)+20
6x-2=4x+2×1+20
6x-2=4x+2+20
6x-4x=22+2
2x=24
x=24÷2
x=12
Sper ca te-am ajutat !! + Bafta in continuare la teme!!
