Question

Resolva as equações:

A)x-5/7=1
B)3x-1/5=4
C)x+9/9=1
D)4x+3/5=-1
E)8x-5/2=9
F)x/13=-2
G)x/5-3=10

Answer 1

a) x-5 = 7
x= 7+5 --> x= 12

b) 3x-1 = 4.5
3x = 20+1
3x = 21 --> 21/3 = 7= x --> x = 7

c) x+9 = 9
x = 9 - 9 --> x = 0

d) 4x+3 = -5
4x = -5-3
x = -8/4  --> x= -2

e) 8x-5 = 9.2
8x = 18+5
x = 23/8

f) x = -2.13
x = -26

g) x = 10.2
x = 20