SOLUTION: -3×–8y=20 Y=19+5× Why would subtraction be the easiest method for this problem

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Question 1066071: -3×–8y=20
Y=19+5×
Why would subtraction be the easiest method for this problem
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Do you intend the little cross symbol as the variable, x?

system%28-3x-8y=20%2Cy=19%2B5x%29

Why would subtraction be the easiest method for this problem? It would/might not be!

-3x-8%2819%2B5x%29=20, using SUBSTITUTION.
-3x-152-40x=20
-43x=152%2B20
43x=-20-152
x=-172%2F43
highlight%28x=-4%29, and you can find y from this.

ELIMINATION METHOD?
system%28-3x-8y=20%2C5x-y=-19%29
Multiply the entire second equation by 8...
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system%28-3x-8y=20%2C40x-8y=-152%29
and you should be able to subtract one equation from the other equation to eliminate the y and solve for x...