Answer:
x=5
Step-by-step explanation:
When given multiple equations, substitution is the best choice.
1) a+b=c
2) a=2x+5
3) b=3x-6
4) c=24
We can use equations 2, 3, and 4, to substitute equation 1.
2x+5+3x-6 = 24
Combine like terms
5x-1=24
5x=25
x=5
