Answer:
1. x=3
2. s=2
Step-by-step explanation:
4(x+3)=x+15
Step one =4 times x= 4x
step two= 4 times 3=12
4x+12=x+15
-x -x
-------------------
3x +12=15
-12 -12
-----------------
3x=3 divide both sides by 3= x=3
10s+2s+3s+4=34
1.combine like terms= 15s+4=34
2. minus 4= 15s= 30
3. divide 15 both sides
s=2
