Question

1) calcule o valor de x de modo que:
a) 2x+3=15
b) 7x-1=13
c) 2x-4=3
d) 4x+2=-18
e) 5x-2=7+6

Answer 1

Olá bom dia!


A)

2x + 3 = 15
2x = 15 - 3
2x = 12
x = 12/2
x = 6


B)

7x - 1 = 13
7x = 13 + 1
7x = 14
x = 14/7
x = 2


C)

2x - 4 = 3
2x = 3 + 4
2x = 7
x = 7/2


D)

4x + 2 = - 18
4x = - 18 - 2
4x = - 20
x = - 20/4
x = - 5


E)

5x - 2 = 7 + 6
5x = 13 + 2
5x = 15
x = 15/5
x = 3







Espero ter ajudado amigo =)

Abraços!