Question

resolva as equações:

a) 3x-2=4x+2

b)2m+30=4m-20

c) 10+3x=6x-8​

Answer 1

Resposta:

a) -4

b) 25

c) 6

Explicação passo-a-passo:

a) 3x-2=4×+2

3x-4x=2+2

-x=4 x(-1)

x=-4

b)2m+30=4m-20

2m-4m=-20-30

-2m=-50 ×(-1)

2m=50

m=50/2

m=25

c)10+3x=6x-8

3x-6x=-8-10

-3x=-18 ×(-1)

3x=18

x=18/3

x=6

Answer 2

a) 3x-2=4x+2

-2=4x+2-3x

-2 - = x

x = - 4

b)2m+30=4m-20

30 = 4m-20-2m

30+20 = 2m

50/2 = m

m = 25

c) 10+3x=6x-8

10 = 6x - 8 - 3x

18 = 3x

x = 18/3

x = 6