Question

relsova as equaçoes:
a) x+x+x=87
b)x-2x+4x=81
c)47+38+x=110
d)7x+5=0+34
e)28-1000=1500
f)350x-500=100x+750

Answer 1

Olá,

Vamos lá,

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

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

c)47+38+x=110
x = 110 - 47 - 38
x = 25

d)7x+5=0+34
7x = 34 - 5
7x = 29
x = 29/7

e)28-1000=1500
está errada, faltam dados

f)350x-500=100x+750
350x - 100x = 750 + 500
250x= 1.250
x = 1250/250
x = 5

Answer 2

a - x=29
b - x=27
c - x=-25
d= x=29/7
f= x=5