Answer:
x=5
Step-by-step explanation:
If CE=7x+4, then x+3+(8x-9)=7x+4
x+3+8x-9=7x+4
Combine like terms: 9x-6=7x+4
Isolate x to one side: 2x-6=4
add 6: 2x=10
divide by 2: x=5
check your work;plug x into both equations
5+3=8, 8(5)-9=31....8+31=39
7(5)+4=39
