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ludmilkaskok [199]
3 years ago
9

The sum of two numbers is 55 and the difference is 21. what are the numbers?

Mathematics
2 answers:
kiruha [24]3 years ago
5 0
A) x + y = 55
B) x -y =21

Adding both equations:
2 x = 34
x = 17
y = 38


lidiya [134]3 years ago
4 0
X + y = 55
x - y = 21
2x = 76
x =38
38 + y = 55
y =17
(38, 17)
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Use the distributive property to help you solve the equation.<br> - 6(t + 2) = 18<br> t=
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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  

Distributive Property

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

Step-by-step explanation:

<u>Step 1: Define</u>

-6(t + 2) = 18

<u>Step 2: Solve for </u><em><u>t</u></em>

  1. [Distributive Property] Distribute -6:                                                             -6t - 12 = 18
  2. [Addition Property of Equality] Add 12 on both sides:                                 -6t = 30
  3. [Division Property of Equality] Divide -6 on both sides:                                t = -5
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