How to subtract unlike fractions

1 answer:

5 0

Find the common denominator for both unlike fractions.

EX: 1 2
12 8

The lowest common factor is both fractions is 24. Multiply both denominators to get 24.

Do not forget to multiply the numerators with the number you used to multiply the denominators together.

You do not have to multiply each side by the same number.

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Which best describes the relationship between the lines? 2x – y = −7 2x + 4y = 2

seropon [69]

Answer:

Perpendicular

Step-by-step explanation:

2x - y = -7

2x + 4y = 2

-y = -2x - 7

4y = -2x + 2

y = 2x + 7

y = -1/2x + 1/2

Cannot be:

Parallel because the slope would otherwise be the same.

Same line because the equation is not proportional

So, they are perpendicular because a perpendicular line would be a negative and a reciprocal of the current line

8 0

2 years ago

Read 2 more answers

To make ribbon and bow for a hat, Stacey needs 5/6 yard of black ribbon and 2/3 yard of red ribbon. how much total ribbon does s

larisa86 [58]

First make the denominators of the fractions the same by multiplying.

$\frac{2}{3}$ × $\frac{2}{2}$
= $\frac{4}{6}$

Now we just need to add the fractions together

$\frac{5}{6} + \frac{4}{6}$
= $\frac{9}{6}$

9/6 would be the answer, but it can be simplified further, then converted into decimal form.

$\frac{9}{6}$ ÷ $\frac{3}{3}$
= $\frac{3}{2}$
=1.5 yards

Your final answer is 1.5 yards of ribbon are needed.

7 0

3 years ago

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Evaluate each using the values given.<br> 7) 3 - x + x + y; use x = 4, and y=-1

kkurt [141]

Answer:

Step-by-step explanation:

3-4+4+(-1) (-4+4=0)

=3-1

4 0

3 years ago

On a map, 1 inch equals 20 miles. Two cities are 8 inches apart on the map. What is the actual distance between the cities?