Question

Calcule:
1) X+5=15
2)-X-2=12
3)X+3=2x+10
4) 4x-1=x+5
5) 6x+20=2x-20

Answer 1

1) x=15-5 = x= 10
2) -x=12+2 = -x=14 = x= -14
3) x-2x=10-3 = -x=7 = x=-7
4) 4x-x=5+1 = 3x=6 = x=6/3 = x= 2
5) 6x-2x=-20-20 = 4x=-40 = x=-40/4 = x= -10

Answer 2

1) X=15-5.... x=10
2)-2-12= x....... X=-14
3)3-10=2x-x........ X= -7
4)4x-x=5+1..... 6÷3=x.....x=2
5)6x-2x=-20-20..... 4x= -40..... x= -10