Question

a) 5(1 + y) = 3(2y – 2) – 20 b) 5(1 + y) = 3(2y – 2) – 20 c) 3(x + 4) + 2(x + 2) = 2x + 12 d) 2(x – 5) + 1 – 2x = 3(3–x) e) 4 (x + 6) – x = 5x f)18x – 43 = 65 g) 23x – 16 = 14 – 17x h) 2x + 6 = x + 18 i) 5x – 3 = 2x + 9 j) 3(2x – 3) + 2(x + 1) = 3x + 18 k) 2x + 3(x – 5) = 4x + 9 l) 2(x + 1) – 3(2x – 5) = 6x – 3

Answer 1

Explicação passo-a-passo:

a) 5(1 + y) = 3(2y – 2) – 20

5+5y=6y-6-20

5y-6y=-6-20-5

-y=-31 (-1)

Y=31

b) 5(1 + y) = 3(2y – 2) – 20

Idem a A

c) 3(x + 4) + 2(x + 2) = 2x + 12

3x+12+2x+4=2x+12

3x+2x-2x=12-12-4

3x=-4

X=-4/3

d) 2(x – 5) + 1 – 2x = 3(3–x)

2x-10+1-2x=9-3x

2x-2x+3x=9+10-1

3x=18

X=18/3

X=6

e) 4 (x + 6) – x = 5x

4x-24-x=5x

4x-x-5x=24

-2x==24

X=24/-2

X=-12

f)18x – 43 = 65

18x=65+43

18x=108

X=108/18

X=6

g) 23x – 16 = 14 – 17x

23x+17x=14+16

40x=30

X=30/40

h) 2x + 6 = x + 18

2x-x=18-6

X=12

i) 5x – 3 = 2x + 9

5x-2x=9+3

3x=12

X=12/3

X=4

j) 3(2x – 3) + 2(x + 1) =

3x + 18

6x-9+2x+2=3x+18

6x+2x-3x=18+9-2

5x=25

X=25/5

X=5

k) 2x + 3(x – 5) = 4x + 9

2x+3x-15=4x+9

2x+3x-4x=9+15

X=24

l) 2(x + 1) – 3(2x – 5) = 6x – 3

2x+2-6x+15=6x-3

2x-6x-6x=-3-2-15

-10x=-20

X=-20/-10 (-1)

X=20/10

X=2