Question

resolva
a) x+3=7
b) x-45=2x-1
c) 27x+2=3x-43
d) 4x-3=15
e)4(x-1)

Answer 1

Vamos là.

a)

x + 3 = 7

x + 3 - 3 = 7 - 3

x = 4

b)

x - 45 = 2x - 1

2x - x = -45 + 1

x = -44

c)

27x + 2 = 3x - 43

24x = -45

x = -45/24 = -15/8

d)

4x - 3 = 15

4x = 15 + 3 = 18

x = 9/2

e) incompleto