Question

encontre o valor das variaveis nas equacoes

A)2X-9=19

b)8a=5=3a=20
C)3Y-y-2=28

Answer 1

A)2x-9=19

2x=19+9

2x=28

x=28/2

X=14

B)8a =5= 3a=20

8a-3a=20-5

5a=15

A= 15/5

A= 3

3y-y-2=28

2y-2=28

2y=28-2

2y=26

y=26/2

y= 13