Question

resolva as equeções
a)2× - 3 = 15
b)3× - 8= ×+6
c)3× - 3 = 15
d)5× - 8 = ×+16

Answer 1

a)2x-3=15
2x=15+3
X=18/2
X=9

b)3x-8=x+6
3x-x=6+8
2x=14
X=7

c)3x-3=15
3x=18
x=6

d)5x-8=x+16
5x-x=16+8
4x=24
x=6

Answer 2

2x - 3 = 15
2x = 15 + 3
2x = 18
x = 18 : 2
x = 9 

3x - 8 = x + 6 
3x - x = 6 + 8 
2x = 14
x = 14 : 2
x = 7

3x - 3 = 15
3x = 15 + 3
3x = 18 
x = 18 : 3
x = 6 

5x - 8 = x + 16
5x - x = 16 + 8 
4x = 24
x = 24 : 4
x = 6