Question

resolva as equação abaixo a)2× + 8 = 34 b)3× + 5× = 64 c)4× - 8 = 32 d)5×- 25 = 75 d) 2×+×-5=25

Answer 1

A)2x+8=34
2x=34-8
2x=26
x=26/2
x=13

B)3x+5x=64
8x=64
x=64/8
x=8

C)4x-8=32
4x=32+8
4x=40
x=40/4
x=10

D)5x-25=75
5x=75+25
5x=100
x=100/5
x=20

E)2x+x-5=25
2x+x=25+5
3x=30
x=30/3
x=10

Answer 2

a)
2x + 8 = 34 
2x = 34 - 8
2x = 26
x = 26/2
x = 13
=======================
b)
3x + 5x = 64 
8x = 64
x = 64/8
x = 8
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c) 
4x - 8 = 32 
4x = 32 + 8
4x = 40
x = 40/4
x = 10
================
d)
5x -  25 = 75 
5x = 75 + 25
5x = 100
x = 100/5
x = 20
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e) 
2x + x - 5 = 25
3x - 5 = 25
3x = 25 + 5
3x = 30
x = 30/3
x = 10