Question

1-) Resolva as equações.

a) 3 + x = 0

b) 23x + 2 = 2

c) 12 – 7 + 4x = 25

d) 5x – 3x = 30

e) 4x + 10 = 45 – 3x

f) 2 − 3 = 25.

g) −3 + 2 = −7.

h) + 12 = 2 − 5.

i) 3 + 4 = −9 + 14.

j) 2( − 3) = 4(2 + 1).

Answer 1

Explicação passo-a-passo:

a) 3 + x = 0

x= -3

b) 23x + 2 = 2

23X+2-2 = 2-2

23X=0

X= 0/23

X= 0

c) 12 – 7 + 4x = 25

12-12-7+7+4X = 25-12+7

4X= 20

4X/4=20/4

X= 5

d) 5x – 3x = 30

2X=30

2X/2=30/2

X= 15

e) 4x + 10 = 45 – 3x

4x+10-10=45-3x-10

4x+3x=45-3x+3x-10

7x=45-10

7x=35

7x/7=35/7

x=5