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3 years ago

Judi solved the equation 1 – 18 = 43. Her work is shown. What error did Judi make?

Mathematics

2 answers:

sergeinik [125]3 years ago

8 0

Answer:

She should have added 18 to 43 rather than subtracted it.

Step-by-step explanation:

When you are going backwards such as in that problem, you have to do the opposite sign. For example, if it is adding a number, let's say 6, to another number, let's say 4x. So our equation can be 4x + 6 = 18 so I can explain all of the signs.

4x + 6 = 18

- 6 - 6

-----------------

4x = 12

4 times x = 12

/ 4 / 4

x = 3.

I hope this helps for future problems.

mihalych1998 [28]3 years ago

7 0

Answer:

she needed to add instead of subtract to find x so x should be 61

Step-by-step explanation:

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Answer:

Equivalent fractions and ratios mean that when simplified, they are the same one fraction or ratio. see examples below.

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2 years ago

Can some one help me

il63 [147K]

Answer:

5/6

Step-by-step explanation:

Dividing fractions:

Step 1: Rewrite the first fraction as it is.

Step 2: Replace the division sign with a multiplication sign.

Step 3: Flip the second fraction.

Step 4: Multiply the fractions and reduce the product if necessary.

Let's use the rule of dividing fractions on your problem.

Step 1: Rewrite the first fraction as it is.

$\dfrac{5}{8}$

Step 2: Replace the division sign with a multiplication sign.

$\dfrac{5}{8} \times$

Step 3: Flip the second fraction.

$\dfrac{5}{8} \times \dfrac{4}{3}$

Step 4: Multiply the fractions and reduce the product if necessary.

To multiply fractions, multiply the numerators together, and multiply the denominators together.

$\dfrac{5}{8} \times \dfrac{4}{3} = \dfrac{5 \times 4}{8 \times 3} = \dfrac{20}{24}$

We notice that the greatest common factor of 20 and 24 is 4, so we divide both the numerator and denominator by 4 to reduce the fraction.

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3 years ago