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HELP!!

Solve the system using addition.
7 x plus 2 y
equals
negative 13
negative 7 x plus y
equals
25

1 Answer

7 votes

Answer:

y=4. x=-3

Explanation:

7x+2y=-13. add or minus each other

+ -7x+y=25

3y=12. solve it to get y=4( divide by 3 on both sides)

knowing that y is 4, solve one of the equations

-7x+4=25. -4 on both sides

-7x=21. divide by -7x on both sides

x=-3

therefore y=4 and X=-3

User Ammar Ismaeel
by
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