Let Sydney's age be x
Christine's age is 2x
Sum of their age is 54
x + 2x = 54
3x = 54
x = 18
Sydney is 18 years old.
Answer:
The answer is A: y=7
Step-by-step explanation:
If you multiply 7 x 7 x 7 the answer would be 343.
9ab + 12 + ax - 6b - 8x
9ab + ax - 8x - 6b + 12
9ab + (a - 8)x - 6b + 12
