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kicyunya [14]
3 years ago
6

4x+5=21 What’s the answer

Mathematics
1 answer:
ioda3 years ago
5 0

Answer:

X=4

Step-by-step explanation:

Subtract 5 from both sides and you get 4x=16. Divide both sides by 4 and you get x=4

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The value of a certain fraction becomes 1/5 if one is added to its numerator. If one is taken away from its denominator, its val
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Answer:

\frac{2}{15}

Step-by-step explanation:

Let the original fraction be \frac{x}{y}

Then adding 1 to the numerator gives

\frac{x+1}{y} = \frac{1}{5} ( cross-  multiply )

⇒ y = 5x + 5 → (1)

Subtracting 1 from the denominator gives

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Substitute y = 5x + 5 into (2)

5x + 5 - 1 = 7x ← subtract 5x from both sides

4 = 2x ⇒ x = 2

Substitute x = 2 into (1)

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3 years ago
Which expressions are equivalent to this expression?
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Answer:

<em>Answer</em><em> </em><em>is</em><em> </em><em>given below with explanations</em><em>. </em>

Step-by-step explanation:

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<em>HAVE A NICE DAY</em><em>!</em>

<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>

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