Question

What’s the answer

X=-6
10x + 7y = -18

Answer 1

(x, y) = (-6, 6)

Explanation:

You want to solve the system of equations by substitution:

• x = -6
• 10x +7y = -18

Substitution

There is already given an expression for x, so we can use that in the second equation:

10(-6) +7y = -18

Adding 60 to both sides gives ...

7y = 42

y = 6 . . . . . . . . divide by 7

The solution is (x, y) = (-6, 6).

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