Step-by-step Answer
PAGE: 150SET: ExercisesPROBLEM: 10
Please look in your text book for this problem Statement

The system of equations are .

------------------>       (1)

------------>          (2)

------------->       (3)

Use substitute to make a system of two equations in two variables. 

Rewrite the equation .

Divide each side by negative 4.

Substitute value in equation (2).

Add 10 to each side.

Divide each side by 2.

Substitute and values in equation (3).

Subtract 15 from each side.

Divide each side by negative 7.

The values are .


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