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3 years ago

Solve for x 9x + 3 = 21

Mathematics

2 answers:

VladimirAG [237]3 years ago

8 0

Hi,

9x = 21 - 3

9x = 18

x = 18/9 = 2

Ratling [72]3 years ago

3 0

<h2>Answer:</h2>

This is a two-step equation:

$9x + 3 = 21\\\\9x = 18\\\\x = 2$

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Solve for x using the<br> distributive property.<br> 3(x + 4) = 6

Murljashka [212]

Hello!

$\large\boxed{x = -2}$

3(x + 4) = 6

Distribute the terms inside of the parenthesis with the coefficient outside:

3(x) + 3(4) = 6

Simplify:

3x + 12 = 6

Subtract 12 from both sides:

3x + 12 - 12 = 6 - 12

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Divide both sides by 3:

3x/3 = -6/3

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3 years ago

How do you calculate 3 divided by 4/5th?

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3 years ago

Dan spends 1 4 of his wages on rent and 1 3 on food. If he makes ?396 per week, how much money does he have left?

neonofarm [45]

Answer: $\£165$

Step-by-step explanation:

<h3> The complete exercise is: "Dan spends $\frac{1}{4}$ of his wages on rent and $\frac{1}{3}$ on food. if he makes £396 per week, how much money does he have left?"</h3>

Let be "x" the amount of money Dan has left.

You know that he spends $\frac{1}{4}$ on rent. You calcualte this amount of money by multiplying £396 by $\frac{1}{4}$ . Then:

$Spent\ on\ rent=(\£396)\frac{1}{4}=\£99$

In order to find the amount of money he spent on foord, you must multiple £396 by $\frac{1}{3}$ . Then:

$Spent\ on\ food=(\£396)\frac{1}{3}=\£132$

Therefore, the amount of money Dan has left is:

$x=\£396-\£132-\£99\\\\x=\£165$

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Answer:

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Step-by-step explanation:

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