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2 years ago

Find the sum. (5-21) + (-7+81)

Mathematics

2 answers:

sergij07 [2.7K]2 years ago

6 0

58

First solve what is inside the parentheses (PEMDAS)

(5-21)+(-7+81)
(-16)+(74)
Add
58

Hope this helps! :)

Rom4ik [11]2 years ago

4 0

Answer:

Step-by-step explanation:

(5-21) is -16 and (-7+81) is 74,so 74+-16 is 58

Mark me brainliest if this helped:D

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Find an expression which represents the sum of (7x - 8y) and (-6x - 6y) in simplest terms.

grigory [225]

Answer:

$\displaystyle (7x - 8y) + (-6x - 6y) = x - 14y$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

Identify

$\displaystyle (7x - 8y) + (-6x - 6y)$

Step 2: Simplify

Combine like terms (x): $\displaystyle (7x - 8y) + (-6x - 6y) = x - 8y - 6y$
Combine like terms (y): $\displaystyle (7x - 8y) + (-6x - 6y) = x - 14y$

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2 years ago

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kow [346]

Answer:

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Step-by-step explanation:

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Solve the equation: w^2+7w+12=0

polet [3.4K]

Hi there!
We are given the equation w² + 7w + 12 = 0, and we are told to solve it. Well, we can first take all the factors of 12 -
1 12
2 6
3 4
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Sergio039 [100]

Answer:

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