Question

1. Resolva as seguintes equações:

a)6x+3=3x+12

b)5x+5=3x-10

c)2x+9+2x=3x+5-2

d)2(x+3)=8x+10
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Answer 1

a) 6x-3x = 12-3
3x = 9
x= 9/3
x= 3

B) 5x+3x = -10 -5
8x = -15
x= 15/8

C) 2x+2x-3x = 5-2-9
x= -6

D) 2+3x = 8x+10
3x-8x = 10 - 2
-5x = 8
x= 8/-5

Answer 2

Explicação passo-a-passo:

a)6x+3=3x+12

6x - 3x = 12 - 3

3x = 9

x = 9/3

x = 3

b)5x+5=3x-10

5x - 3x = -10 - 5

2x = -15

x = -15/2

x = -15/2

c)2x+9+2x=3x+5-2

4x + 9 = 3x + 3

4x - 3x = 3 - 9

x = -6

d)2(x+3)=8x+10

2x + 6 = 8x + 10

2x - 8x = 10 - 6

-6x = 4

x = 4/-6

x = 2/-3