Question

Resolva as equações sendo U = Q
a) x+x+x = 87
b) x-2x + 4x = 81
c) 47+38+x=110
d) 7x+5=0+34
e)2x-1000=1500
f) 350x-500=100x +750​

Answer 1

Resposta:

A) 3x= 87

x = 87/3

x= 29

B ) 3x = 81

x= 81/3

x=27

C) 47+38+x= 110

85+x = 110

x = 110-85

x= 25

D)7x + 5 = 0+34

7x = 34-5

7x = 29

x= 29/7

E) 2x-1000 = 1500

2x= 1500+1000

2x = 2500

x= 1250

F)350x-500=100x +750​

350x - 100x = 750 +500

250x = 1250

X= 5

Explicação passo-a-passo:

Answer 2

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

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

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

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

e)2x-1000=1500 , 2x = 1500 + 1000 = 3500, x = 1750

f) 350x-500=100x +750​, 350x - 100x = 750 + 500 , x = 5