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eduard
2 years ago
8

Cody is cooking pancakes. The recipe calls for 5 3/10 cups of flour. He accidentally put in 8 1/4 cups. How many extra cups did

he put in?
Mathematics
1 answer:
Eddi Din [679]2 years ago
3 0

Answer:

59/20 cups

Step-by-step explanation:

5 3/10

8 1/4

Common denimainator  is 40

5 3/10 = 5 12/40

8 1/4 = 8 10/40

Now we can subtract:

330/40-212/40=118/40

118/40= 59/20 cups

Sorry if I spelled some words wrong

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Samuel is solving the equation 3(x - 1) + 4 = 2 - (x + 3). Which equivalent equations might Samuel use? Select the TWO correct a
mote1985 [20]

A= 3, and 4. (c & d)

1. Solve the Equation: 3(x - 1) + 4 = 2 - (x + 3)\\, to get

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

1a. Use the distributive property to multiply 3 by x−1.

3x−3+4=2−(x+3)

1b. Add −3 and 4 to get 1.

3x+1=2−(x+3)

1c. To find the opposite of x+3, find the opposite of each term.

3x+1=2−x−3

1d. Subtract 3 from 2 to get −1.

3x+1=−1−x

1e. Add x to both sides.

3x+1+x=−1

1f. Combine 3x and x to get 4x.

4x+1=−1

1g. Subtract 1 from both sides.

4x=−1−1

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4x=−2

1i. Divide both sides by 4.

x=4−2​

1j. Reduce the fraction 4−2​=−0.5 to lowest terms by extracting and canceling out 2.

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

Now that you know the answers, solve the others:

2. A= 1, so this is wrong. How I solved it is shown below:

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

1a. Add −3 and 4 to get 1.

3x+1=2−x+3

1b. Add 2 and 3 to get 5.

3x+1=5−x

1c. Add x to both sides.

3x+1+x=5

1d. Combine 3x and x to get 4x.

4x+1=5

1e. Subtract 1 from both sides.

4x=5−1

1f. Subtract 1 from 5 to get 4.

4x=4

1g.Divide both sides by 4.

x=44​

1h. Divide 4 by 4 to get 1.

x=1

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

3. A= .5, so it is Correct. Work below

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

3a. Add x to both sides.

3x+3+x=5

3b. Combine 3x and x to get 4x.

4x+3=5

3c. Subtract 3 from both sides.

4x=5−3

3d. Subtract 3 from 5 to get 2.

4x=2

3e. Divide both sides by 4.

x=42​

3f. Reduce the fraction 42​=0.5 to lowest terms by extracting and canceling out 2.

x=21​ (A = 1/2 or .5)

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

4. A= .5, so it is correct. Work below. Now we have our 2, so we don't need to do it again.

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

4a. Add −1 and 4 to get 3.

3x+3=2−x+3

4b. Add 2 and 3 to get 5.

3x+3=5−x

4c. Add x to both sides.

3x+3+x=5

4d. Combine 3x and x to get 4x.

4x+3=5

4e. Subtract 3 from both sides.

4x=5−3

4f. Subtract 3 from 5 to get 2.

4x=2

4g. Divide both sides by 4.

x=\frac{2}{4}

4h. Reduce the fraction 42​=0.5 to lowest terms by extracting and canceling out 2.

x=\frac{1}{2}

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