2 years ago

What the answer to 7+4a=55?

Mathematics

1 answer:

xxTIMURxx [149]2 years ago

4 0

7+4a=55
4a=55-7
4a=48
a=48/4
a=12

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To calculate percentage decrease, use the formula,

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$= \frac{new \: price - old \: price}{old \: price} \times 100\%$

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Today the price is 2.15. This is the new price.

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