lindsaymccrary06 lindsaymccrary06

26-02-2021
Mathematics

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the difference of two numbers is negative ten. seven times the first plus seven times the second is negative fourteen.

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maheeniqbal maheeniqbal

26-02-2021

x-y=-10
x=-10-y

7x+7y=-14
7(-10-y)+7y=-14
-70-7y+7y=-14
0y=56
y=0

x=-10-y
x=-10-0
x=-10

I’m not 100% sure if this is right, so I hope someone checks this over :)

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