Resposta:
Explicação passo a passo:
a) 3 + x = 0
x = -3
b) 23x + 2 = 2
23x = 2 - 2
23x = 0
x = 0 ÷ 23
x = 0
c) 12 - 7 + 4x =25
4x = 25 - 12 + 7
4x = 32 - 12
4x = 20
x = 20 ÷ 4
x = 5
d) 5x - 3x = 30
2x = 30
x = 30 ÷ 2
x = 15
e) 4x + 10 = 45 - 3x
4x + 3x = 45 - 10
7x = 35
x = 35 ÷ 7
f) 4x + 2 = 38
4x = 38 - 2
4x = 36
x = 36 ÷ 4
x = 9
g) 9x = 6x + 12
9x - 6x = 12
3x = 12
x = 12 ÷ 3
x = 4
h) 5x + 11 = 5x + 11
5x - 5x = 11 -11
0
i) 2x + 8 = 2x + 13
2x - 2x = 13 - 8
5
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Resposta:
Explicação passo a passo:
a) 3 + x = 0
x = -3
b) 23x + 2 = 2
23x = 2 - 2
23x = 0
x = 0 ÷ 23
x = 0
c) 12 - 7 + 4x =25
4x = 25 - 12 + 7
4x = 32 - 12
4x = 20
x = 20 ÷ 4
x = 5
d) 5x - 3x = 30
2x = 30
x = 30 ÷ 2
x = 15
e) 4x + 10 = 45 - 3x
4x + 3x = 45 - 10
7x = 35
x = 35 ÷ 7
x = 5
f) 4x + 2 = 38
4x = 38 - 2
4x = 36
x = 36 ÷ 4
x = 9
g) 9x = 6x + 12
9x - 6x = 12
3x = 12
x = 12 ÷ 3
x = 4
h) 5x + 11 = 5x + 11
5x - 5x = 11 -11
0
i) 2x + 8 = 2x + 13
2x - 2x = 13 - 8
5