Question

I HAVE JUST A FEW MORE QUESTION PLEASE HELP???Solve the system of equations: what is the y-value in the solution?
3x - 5y = -16 and 2x + 5y = 31

5
3
2
4

Answer 1

3x-5y=-16
2x+5y=31

So 3x=5y-16\[x=\frac{ 5y }{ 3 }-\frac{ 16 }{ 3 }\]Then\[2(\frac{ 5y }{ 3 }-\frac{ 16 }{ 3 })+5y=31\]\[\frac{ 10y }{ 3 }-\frac{ 32 }{ 3 }+\frac{ 15y }{ 3 }=31\]\[\frac{ 25y }{ 3 }=\frac{ 93 }{ 3 }+\frac{ 32 }{ 3 }\]\[\frac{ 25y }{ 3 }=\frac{ 125 }{ 3 }\]\[25y=125\]\[y\]

Answer 2

y=5

Answer 3

thsnk you