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Sagot :
Answer:
multiply the first equation by 2
Step-by-step explanation:
24x + 36y = 72
-16x + 8y = 80
48x + 72y = 144
-48x + 24y = 240
96y = 384
y = 4
24x + 36(4) = 72
24x + 144 = 72
24x = -72
x = -3
(-3, 4)
First equation should be multiplied by 2 to eliminate the x variable by addition.
What is the system of equation?
" A system of equation is a finite set of equations for which we find the common solution."
According to the question,
System of equations are
24x + 36y = 72
-16x + 8y = 80
As per the given condition,
Second equation multiply by 3 we get,
-48x + 24y =240
To eliminate x by adding we have to multiply first equation by 2 we get,
48x + 72y = 144
Now add both the equation we get,
96y =384
⇒ y = 4
Hence, first equation should be multiplied by 2 to eliminate the x variable by addition.
Learn more about system of equation here
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