Question

Calcule o valor de x de modo que :

a) 2x+3=15
b) 7x-1=3
c) 2x-4=3

Answer 1

A) 2x + 3 = 15
2x = 12
x= 6

B) 7x-1=3
7x = 4
x= 4/7

C) 2x-4=3
2x=7
x=7/2

Answer 2

Olá!:

a) 2 x + 3 = 15

2x = 15 - 3

2x =  12

x = 12 / 2

x = 6
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b) 7x - 1 = 3

7x = 3 + 1

7x = 4

x= 4 / 7 
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c) 2x - 4 = 3

2x = 3 + 4

2x = 7

x = 7 / 2
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