3 years ago

Reasoning Solve the system of linear equations using substitution. Use pencil and paper. Which

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

5 0

Answer:

Since the first equation x is equal to 4y - 9, it is easier to substitute 4y - 9 in for x in the second equation.

x = -1 y = 2

Step-by-step explanation:

Since the first equation x is equal to 4y - 9, it is easier to substitute 4y - 9 in for x in the second equation. That would give you

4y - 9 + 4y = 7

8y - 9 = 7

8y = 16

y = 2

x = 4y - 9 = 4(2) - 9 = 8 - 9 = -1

It is always a good idea to check and see if your results satisfy the two equations

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