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Contact [7]
3 years ago
6

Solve for a. 15(25−5a)=4−a

Mathematics
2 answers:
VMariaS [17]3 years ago
6 0
15(25-5a)=4-a
375-75a=4-a
Add 75a to both sides
375= 4+74a
Subtract 4 from both sides
371=74a
Divide both by 74
5.01=a
Free_Kalibri [48]3 years ago
4 0

Answer:

The value of the equation for a is 371/74 or 5.0135.  

Step-by-step explanation:

Consider the provided equation.

15(25-5a)=4-a

We need to solve the provided equation for a.

Open the parentheses.

375-75a=4-a

Add a to both side.

375-75a+a=4-a+a

375-74a=4

Subtract 375 from both the sides.

375-375-74a=4-375

-74a=-371

Divide both the sides by -74.

a=\frac{371}{74}

Hence, the value of the equation for a is 371/74 or 5.0135.  

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Answer:

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General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

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<u>Step 2: Evaluate</u>

  1. (Parenthesis) Add:                     5² × 7 - 13 + 5²
  2. Exponents:                                 25 × 7 - 13 + 25
  3. Multiply:                                      175 - 13 + 25
  4. Subtract:                                     162 + 25
  5. Add:                                            187
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