SOLUTION: 3x+5y=15 and y=x+3

SOLUTION: 3x+5y=15 and y=x+3

Algebra.Com

Question 183581: 3x+5y=15 and y=x+3
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
y=x+3 now replace y in the secomd equation by (x+3) & solve for x.
3x+5y=15
3x+5(x+3)=15
3x+5x+15=15
8x=15-15
8x=0
x=0 ans
y=0+3
y=3 ans.
Proof:
3*0+5*3=15
15=15
RELATED QUESTIONS
Find four solutions for the equation 3x + 5y = 15. I don't know if I did my solutions... (answered by Fombitz)

graph x and y intercept... (answered by jim_thompson5910)

does anyone know how to solve x,y,z equations for x and explain?! 2x + y + z = 0... (answered by jsmallt9)

Solve -3x+5y=21 and... (answered by MathLover1,josgarithmetic)

3x - y = 0 5y =... (answered by Alan3354)

solve for x and y. -3x-5y=6 y=-3 y=-6x-3... (answered by MathLover1)

solve for x and y. 3x-y=-15... (answered by Fombitz)

I can't seem to fully understand how to get through the whole process to the answer.... (answered by rapaljer)

I can't seem to fully understand how to get through the whole process to the answer.... (answered by Edwin McCravy)