Question

simplifique e resolva as equações



a)4x-3-x+8=11

b)6.(x-2)=12

c)9+2.(5x-4)=21

d)10x+4(3-2x)-6=8



ajudem pfvr​

Answer 1

Explicação passo-a-passo:

a) 4x-3-x+8=11

4x - x = 11 +3 - 8

3x = 6

x = 6÷3

x = 2

b) 6.(x-2)=12

6x - 12 = 12

6x = 12 + 12

6x = 24

x = 24 ÷ 6

x = 4

c) 9+2.(5x-4)=21

9 + 10x - 8 = 31

10x = 31 - 9 + 8

10x = 30

x = 30÷10

x = 3

d) 10x+4(3-2x)-6=8

10x + 12 - 8x - 6 = 8

10x - 8x = 8 - 12 + 6

2x = -10

x = -10 ÷ 2

x = -5