Question

Resolva as equações abaixo:
a)5x-91=4x-77
b)7x+1=5x-7
c)4x+5=x+20
d)3(x+1)+2(2x-3)=5(x-1)+8
e)3(x+2)-1=2(x+3)-7

f) X
___ =5
3

g) X
____=7
8

h) 2x+5
_____ =3
3

i) 4x-5
_____=5
3

j) 4x+8
_____=4
11


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Answer 1

Resposta:

Explicaça) 9x = 180

x = 180/9

x = 20

b) 7x = 28

x = 28/7

x = 4

c) 7x = 18-7

7x = 11

x = 11/7

d) x = -77+91

x = 14

e) 2x = -6

x = -6/2

x = -3

f) 3x = 15

x = 15/3

x = 5

g) 3x + 3 + 4x - 6 = 5x + 5 + 8

7x - 3 = 5x + 13

2x = 16

x = 16/2

x = 8

i) 3x + 9 - 5 = 22

3x = 22 + 4

3x = 26

x = 26/3

j) 4x + 14 + 9x - 15 = 12x - 15 - 1

13x - 1 = 12x - 16

x = -15

k) 3x + 6 = 2x - 14

x = -8

l) 8x - 4 = 3x + 6

5x = 10

x = 10/5

x = 2

m) 8m - 4 + 3m = 8m - 2 - 2 + 3

3m = 3

m = 3/3

m = 1

ão passo-a-passo: