Answer:
[tex]\boxed{x = -4~~and~~y = 0}[/tex]
.
Step-by-step explanation:
Use elimination
-3x + 5y = 12
7x - 5y = -28 +
[tex]4x = -16[/tex]
[tex]x = \frac{-16}{4}[/tex]
[tex]x = -4[/tex]
.
Subsitute the value of x to one of equations
[tex]-3x + 5y = 12[/tex]
[tex]-3(-4) + 5y = 12[/tex]
[tex]12 + 5y = 12[/tex]
[tex]5y = 12 - 12[/tex]
[tex]5y = 0[/tex]
[tex]y = \frac{0}{5}[/tex]
[tex]y = 0[/tex]
.
Happy to help :)
