Answer:
a=8
b=16
c=33
Step-by-step explanation:
Let's call the integers a, b, and c. (a is the first, b is the second, and c is the third.)
a+b+c=57
Write the second two sentences as equations.
b=2a
c=5a-7
Plug in these values of b and c to the original equation.
a+(2a)+(5a-7)=57
Solve for a:
a+2a+5a-7=57
8a-7=57
8a=64
a=8
Now, plug in your solution for a into the equations for b and c to solve for them.
b=2a=2(8)=16
c=5a-7=5(8)-7=40-7=33
You can add up your answers for a, b, and c to make sure you're correct.
a+b+c=8+16+33=57
I hope this helped!
