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dlinn [17]
3 years ago
5

How to work it out ‍

Mathematics
2 answers:
ELEN [110]3 years ago
7 0

Answer: b = -1

<h3>Method:</h3>

1) Expand out 2(6b + 5)

2 × 6b + 2 × 5 = 2 + 4b

12b + 10 = 4b + 2

2) Subtract 10 from both sides

12b + 10 - 10 = 4b + 2 - 10

12b = 4b - 8

3) Subtract 4b from both sides

12b - 4b = 4b - 4b - 8

8b = -8

4) Divide both sides by 8

(8b) ÷ 8 = -8 ÷ 8

b = -1

5) Substitute back in to check

2(6(-1) + 5) = 2 + 4(-1)

2(-6 + 5) = 2 + -4

2(-1) = -2

-2 = -2


julsineya [31]3 years ago
6 0
Brackets first

2 * 6b is 12b
2 * 5 is 10
first part is 12b +10

The equation now is 12b + 10 is equal to 2 + 4b
take 2 from both sides
12b + 8 is equal to 4b
take 12b from both sides
8 is equal to -8b
divide by 8
1 is equal to -1b

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108 divided by 9 = 12. 
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3 years ago
How do i solve this.?
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4x + 10 = -26
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3 years ago
What is the step by step to solved a divide decimal 1.52 divide by 1.9
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0.8

EXPLANATION

We want to simplify

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We convert the decimals to fractions

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4 years ago
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nikklg [1K]

Answer:

Latisha correctly verified that x² + x - 12 = (x - 3)(x + 4)

Step-by-step explanation:

In the problem, each student was to give their explanation of why the statement above is correct. In order to know if this statement is correct, you can also simply multiply the terms after the equal sign.

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Use foil method to multiply.

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4 years ago
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