1) 3,4
2)
3) 2
4) =7,8
1) 3(3x-1)-4x+1=15
9x-3-4x+1=15
9x-4x=15+3-1
5x=17
x=17/5
x=3,4
2) 5(1-2x)+4=7+5x
5-10x+4=7+5x
5+4-7=5x+10x
2=15x
x=2/15
3) 2x-1-2(1-x)=5
2x-1-2+2x=5
2x+2x=5-1-2
4x=2
x=2/4
x=0,5
4) 8(2x-3)-14x=15-3x
16x-24-14x=15-3x
16x-14x+3x=15+24
5x=39
x=39/5
x=7,8
1) 3,4
2)
3) 2
4) =7,8
1) 3(3x-1)-4x+1=15
9x-3-4x+1=15
9x-4x=15+3-1
5x=17
x=17/5
x=3,4
2) 5(1-2x)+4=7+5x
5-10x+4=7+5x
5+4-7=5x+10x
2=15x
x=2/15
x=2/15
3) 2x-1-2(1-x)=5
2x-1-2+2x=5
2x+2x=5-1-2
4x=2
x=2/4
x=0,5
4) 8(2x-3)-14x=15-3x
16x-24-14x=15-3x
16x-14x+3x=15+24
5x=39
x=39/5
x=7,8