Question

Solve the following system of equations for the unknown variables.
a – 6 = 2b

a + b = 15
im suppose to be solving by substitution but i get half way through and cant figure it out?

Answer 1

rewrite : a-2b=6

Answer 2

u need solve a and b ?

Answer 3

yeah

Answer 4

time (-1) u get
-a-b=-15

Answer 5

thank u

Answer 6

a-2b=6
-a-b =-15
-------------------
add -3b =-9
b=-9/-3
b =3
sutitution b = 3 solve for a

a – 6 = 2(3)
a - 6 =6
a =6+6
a =12
if I deverse a medal tha give me one TY

Answer 7

k

Answer 8

ok?