Question

7) Resolva as seguintes equaçoes:
a) 4(x + 10) - 2(x - 5) = 0
b) 3(2x + 3) - 4(x - 1) = 3
c) 7(x - 1) - 2(x - 5) = x - 5
d) 2(3- x) = 3(x - 4) + 15
e) 3(5 - x) - 3(1 - 2x) = 42
f) (4x + 6) - 2x = (x - 6) + 10 + 14
g) (x - 3) - (x + 2) + 2(x - 1) - 5 = 0
h) 3x - 2 (Ax - 3) = 2-3(6 - 1)
i) 3(x - 1) - (x - 3) +5(x - 2) = 18
j) 5(x - 3) - 4(x + 2) = 2 + 3(1 - 2x)​

Answer 1

a) 4x+40-2x+10=0

2x+50=0

2x=-50

x=-25

b) 6x+9-4x+4=3

2x+13=3

2x=-10

2x=-5

c) 7x-7-2x+10=x-5

4x=2

x=0,5

d) 6-2x=3x-12+15

x=-3

e) 15-3x-3+6x=42

3x=30

x=10

f) 4x+6-2x=x-6+10+14

x=24

g) x-3-x+2+2x-2-5=0

2x=-8

x=4

h) Não sei o que seria o "A"

i) 3x-3-x+3+5x-10=18

7x=28

x=4

j) 5x-15-4x-8=2+3-6x

7x= 28

x=4

Espero ter ajudado☆