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3 years ago

Solve the system of linear equations by substitution. x+y=10 2x+y=15

Mathematics

1 answer:

mrs_skeptik [129]3 years ago

7 0

Answer:

(5, 5)

Step-by-step explanation:

x+y=10 2x+y=15

2x+y=15 - Simplify

2x+x=15 - substitute

3x=15 - divide each side by 3

x=5

x+y=10 - substitute

5+y=10 - subtract 5 from each side

y=5

CHECK (5, 5)

x+y=10 2x+y=15

5+5=10 2(5)+5=15

10=10 10+5=15

10=10 15=15

HAVE A GREAT DAY!!!!!!

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