Respuesta :

Answer:

the answer is -7

Step-by-step explanation:

i cant explain how, i used a site called math-way but theres not actually a dash

Step-by-step explanation:

Substitution method can be applied in four steps

Step 1:

Solve one of the equations for either x = or y = .

Step 2:

Substitute the solution from step 1 into the other equation.

Step 3:

Solve this new equation.

Step 4:

Solve for the second variable.

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