Question

Resolva as equações:
a) 47 + 38 - x = 110
b) 5x – 7 = x + 12 – 3x
c) 4-X + 16 = 6 + 4x – 2x
d) 3x - 5 = 9 + 2(x-7)
e) 4(x-5) - x = 2 - 2(x+3)
f) 6x - 4(x - 2) = 11 - X
g) 5- (x + 4) = 6-3(x + 1)
h) 4(x + 1) = 12
i) 5(3 – x) = 4x + 18
j) 3(2x - 1) = -2(x+3) •
k) 4(x + 10) - 2(x - 5)= 0​

Answer 1

Explicação passo-a-passo:

Resolva as equações:

a) 47 + 38 - x = 110

-x+47+38=110

-x+85=110

-x=110-85

-x=25

x=25/-1

x=25

b) 5x – 7 = x + 12 – 3x

5x-x+3x=12+7

4x+3x=19

7x=19

x=19/7

c) 4-X + 16 = 6 + 4x – 2x

-3x-4x+2x=-1-16

-7x+2x=-17

-5x=-17

x=-17/-5

x=17/5

d) 3x - 5 = 9 + 2(x-7)

3x-5=9+2x-14

3x-2x=-14+9+5

x= -14+14

x=0

e) 4(x-5) - x = 2 - 2(x+3)

4x-20-x=2-2x-6

4x+x+2x=-6+2+20

5x+2x=-4+20

7x=16

x=16/7

f) 6x - 4(x - 2) = 11 - X

6x-4x+8=11-x

2x+8=11

2x=11-8

2x=3

x=3/2

g) 5- (x + 4) = 6-3(x + 1)

5-x-4=6-3x-3

-x+3x=-3+6+4

2x=4+4

2x=8

x=8/2

x=4

h) 4(x + 1) = 12

4x+4=12

4x=12-4

4x=8

.x=8/4

.x=2

i) 5(3 – x) = 4x + 18

15-5x=4x+18

-5x-4x=18-15

-9x= 3

x=3/-9

x=-1/3

j) 3(2x - 1) = -2(x+3)

6x-3=-2x-6

6x+2x=-6+3

8x=-3

.x=-3/8

k) 4(x + 10) - 2(x - 5)= 0

4x+40-2x+10=0

2x=-40-10

.

2x=-50

.x=-50/2

.x=-25