Question

calcule o valor de x de modo que :
2x+3=15
7x-1=13
2x-4=3
4x+2=-18
5x-2=7+6
10x+1=-4-5 urgenteee

Answer 1

2x+3=15
2x=15-3
2x=12
x=12/2
x=6

7x-1=13
7x=13+1
7x=14
x=14/7
x=2

2x-4=3
2x=3+4
2x=7
x=7/2

4x+2=-18
4x=-18-2
4x=-20
x=-20/4
x=-5

5x-2=7+6
5x=7+6+2
5x=15
x=15/5
x=3

10x+1=-4-5
10x=-4-5-1
10x=-10
x=-10/10
x=-1