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3 years ago

Simplify: 3ab-9ab+7ab Solve: A- 2(5x-3)=24 B- 5(2x+1)=50

2 answers:

4 0

3ab-9ab+7ab = ab

A-
2(5x-3)=24
10x - 6 = 24
10x = 30
x = 3

B-
5(2x+1)=50
10x + 5 = 50
10x = 45
x = 4.5

Serjik [45]3 years ago

3 0

3ab - 9ab + 7ab
ab << the answer

2(5x - 3) = 24
10x - 6 = 24
10x = 24 + 6
10x = 30
x = 3 <<< the answer

5(2x + 1) = 50
10x + 5 = 50
10x = 50 - 5
10x = 45
x = 45/10
x = 9/2 << the answer

hope this helps, God bless!

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Step-by-step explanation:

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Let,

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According to given statement;

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Subtracting Eqn 2 from Eqn 3

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Dividing both sides by 7.5

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Putting y=4 in Eqn 1

$x+4=15\\x=15-4\\x=11$

The group rent 11 river rent tubes and 4 cooler tubes.

Keywords: linear equations, subtraction

Learn more about linear equations at:

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