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Crank
4 years ago
7

PLEASE HELP !!

Mathematics
1 answer:
Soloha48 [4]4 years ago
4 0

Answer:

C. 15

Step-by-step explanation:

Given:

$4x + 2y = 50  \hspace{18mm} (1)  \hspace{15mm} x - 3y = 30 \hspace{20mm} (2) $

Dividing Eqn. (1) thorough out by 2, we get $ 2x + y = 25  \hspace{15mm} (3) $

To solve for $x$, multiply (3) by 3 and add (2) and (3).

i.e., $ 6x + 3y - 75 + x - 3y - 30 = 0 $

$ \implies 7x = 105 $

$ \implies x = 15 $

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