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3 years ago

3. (4 + 5) is how much more than 3•4 + 5 ?

Mathematics

1 answer:

ra1l [238]3 years ago

3 0

(4 + 5) is greater than 3·4 + 5 by 8.

Step-by-step explanation:

Step 1: Value of (4 + 5) = 9
Step 2: Value of 3·4 + 5 = 12 + 5 = 17 (as per BODMAS rule)
Step 3: Find the difference between the two.

⇒ 17 - 9 = 8

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Answer: x = 4.5

Step-by-step explanation:

1) Reorder the terms:

3x = -9 + 5x

2) Solving

3x = -9 + 5x

3) Solving for variable 'x'.

4) Move all terms containing x to the left, all other terms to the right.

5) Add '-5x' to each side of the equation.

3x + -5x = -9 + 5x + -5x

6) Combine like terms: 3x + -5x = -2x

-2x = -9 + 5x + -5x

7) Combine like terms: 5x + -5x = 0

-2x = -9 + 0

-2x = -9

8) Divide each side by '-2'.

x = 4.5

9) Simplifying

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Answer:

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General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
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Step-by-step explanation:

Step 1: Define

Point (0, -5)

Point (-2, 1)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

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[Fraction - Denominator] Add: $\displaystyle m=\frac{-6}{2}$
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