Question

Resolva:
A)x+x+x=87

B)x-2x+4x=81

C)47+38+x=110

D)7x-5-6x=-4+5

E)39x+78=0

F)7×+5=34

*Com desenvolvimento, por favor*

Answer 1

A) x+x+x = 87
3x = 87
x = 87/3
x = 29

B) x -2x +4x = 81
3x = 81
x = 81/3
x = 27

C)47 +38 +x = 110
x = 110 -47 -38
x = 110 -85
x = 25

D)7x -5 -6x = -4 +5
7x -6x = -4 +5 +5
x = 6

E)39x +78 = 0
39x = -78
x = -78/39
x = -2

F)7x + 5 = 34
7x = 34 - 5
7x = 29
x = 29/7

Answer 2

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