Question

resolva as equações do 1 grau:
gente vcs podem mim ajudar
a) ×-3=5
b)×+7=5
c)3×-1=11
d)6×-4=2×+8
e)×+5=3×+7​

Answer 1

a) x - 3 = 5

x = 5 + 3

x = 8

b) x + 7 = 5

x = 5 - 7

x = - 2

c) 3x - 1 = 11

3x = 11 + 1

3x = 12

x = 12

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3

x = 4

d) 6x - 4 = 2x + 8

6x - 2x = 8 + 4

4x = 12

x = 12

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4

x = 3

e) x + 5 = 3x + 7

x - 3x = 7 - 5

- 2x = 2 . (-1)

2x = - 2

x = - 2

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2

x = - 1