21y+7x=56? what is the value of X

1 answer:

4 0

Answer:

x = 8 - 3y

Step-by-step explanation:

$21y+7x=56\\\\21y-21y+7x=56-21y\\\\7x=56-21y\\\\\frac{7x=56-21y}{7}\\\\\boxed{x=8-3y}$

Hope this helps.

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