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SVETLANKA909090 [29]
3 years ago
6

Solve the following Systems of Equations by Substitution or Elimination

Mathematics
1 answer:
Likurg_2 [28]3 years ago
7 0

Answer:

(-1,2)

Step-by-step explanation:

y = -2x ______(1)

7x - 8y = -23 ________(2)

Substituting the value of y in eqn.(1) into eqn (2);

7x - 8(-2x) = -23

7x + 16x = -23

23x = -23

x = -1

y = -2(-1) = 2.

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