Solving System equations using substitution 5x+2y=21 -x-y=-9 Can someone help solve this

asked Jan 24, 2022 110k views

2 votes

Solving System equations using substitution

5x+2y=21
-x-y=-9
Can someone help solve this

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3 votes

Answer:

x = 1

Explanation:

-5x+2(7x)=9

-5x+14x=9

9x=9

x=1

also you can use math_way to help solve this

Have a great day!

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