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3 years ago

Given equations A and B as 2/5x+y=12 and 5/2y-x=6 , respectively, which expression will eliminate the variable x?

Mathematics

2 answers:

Alla [95]3 years ago

6 0

Hello,

the answer is 5/2*A+B

Fofino [41]3 years ago

3 0

Answer:

$\frac{2}{5}$ × B + A

Step-by-step explanation:

Given equations are $\frac{2}{5}$ x + y = 12 ---------(A)

and equation $\frac{5}{2}$ y - x = 6 -------------(B)

To eliminate the variable x we will multiply equation A by $\frac{5}{2}$

and add it to equation B.

In other words, the expression that we will adopt to eliminate the variable x will be $\frac{2}{5}$ × B + A

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<span>Divide both sides by 4 to get

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Step-by-step explanation:

we know that

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