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geniusboy [140]
3 years ago
12

Solve the equation 5(x-2)=7(x+4) for x

Mathematics
1 answer:
Sphinxa [80]3 years ago
3 0

Answer:

\boxed{\bold{x=-19}}

Step By Step Explanation:

Expand \bold{5\left(x-2\right): \ 5x-10}

Expand \bold{7\left(x+4\right): \ 7x+28}

\bold{5x-10=7x+28}

Add 10 To Both Sides

\bold{5x=7x+38}

Subtract 7x From Both Sides

\bold{5x-7x=7x+38-7x}

Simplify

\bold{-2x=38}

Divide Both Sides By -2

\bold{\frac{-2x}{-2}=\frac{38}{-2}}

Simplify

\bold{x=-19}

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A school has 600 pupils. 1/5 are in the upper school, 1⁄4 in the middle school and
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4 0
3 years ago
7 3/4 + (12 - 3 6/11) =
nataly862011 [7]

Answer:

\frac{713}{44}  = 16 \frac{9}{44}

Step-by-step explanation:

7 3/4+ (12 - 3 6/11)

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= <u>7</u><u>1</u><u>3</u><u>/</u><u>4</u><u>4</u><u> </u><u>=</u><u> </u><u>1</u><u>6</u><u> </u><u>9</u><u>/</u><u>4</u><u>4</u>

5 0
3 years ago
Read 2 more answers
If x and y are both negative when is x-y positive
Vladimir [108]
X-y is positive when y is further away from 0, compared to x. In other words, when y is a larger negative

For example
x = -2
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7 0
3 years ago
You scored 31 out of 40 points on a test. What percent did you get?
elena-14-01-66 [18.8K]

Answer:


Step-by-step explanation:

Divide 31 by 40. Since you get .775, you make it a percent and it's 77.5% correct.

5 0
3 years ago
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