Question

10. Resolva as equações do 1* grau abaixo
a) 3-X 5x - 15
b) 4x - 3-x+8 = 11
c) 6(x - 2) = 12
d) 10x + 4(3 - 2x) - 6 = 8
e) 3(x - 1) - 2(x + 1) = -9​

Answer 1

Resposta:

a)4X-12

b)3X=8<=>X=8/3

c)6X=24<=>X=4

d)2X=2<=>X=1

e)X= -4

Answer 2

Resposta:

a) 3 b) 2 c) 4 d) 1 e) -4

Explicação passo-a-passo:

a) 3-x= 5x-15

3+15=5x+x

18=6x

x= 18/6

x= 3

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

4x-x=11+3-8

3x=6

x= 6/3

x=2

c) 6(x-2)=12

6x-12=12

6x=12+12

6x=24

x= 24/6

x= 4

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

10x+12-8x-6=8

10x-8x=8+6-12

2x=14-12

2x=2

x=1

e) 3(x-1)-2(x+1)=-9

3x-3-2x-2=-9

3x-2x=-9+3+2

x=-4