Question

Resolva as contas abaixo:​

Answer 1

a)

x-5=2x

x-2x=5

x=5

b)

2x-3=3

2x=-3-3

2x=-6

x=-6/2

x=-3

c)

3x-x=10

2x=10

x=10/2

x=5

d)

5x+10= -10

5x= -10-10

5x= -20

x=-20/5

x= -4

e)

10x-10=10+8x

10x-8x=10+10

2x=20

x=20/2

x=10