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SVETLANKA909090 [29]
3 years ago
12

Solve 25+10*(12-x)=5*(2x-7)

Mathematics
1 answer:
lions [1.4K]3 years ago
4 0
<span>Simplifying 25 + 10(12 + -1x) = 5(2x + -7)
25 + (12 * 10 + -1x * 10) = 5(2x + -7)
25 + (120 + -10x) = 5(2x + -7)
 
Combine like terms: 25 + 120 = 145 145 + -10x = 5(2x + -7)
 
Reorder the terms:
145 + -10x = 5(-7 + 2x)
145 + -10x = (-7 * 5 + 2x * 5)
145 + -10x = (-35 + 10x)
 Solving 145 + -10x = -35 + 10x
 
Solving for variable 'x'.
 
Move all terms containing x to the left, all other terms to the right.
 
Add '-10x' to each side of the equation.
145 + -10x + -10x = -35 + 10x + -10x
 Combine like terms: -10x + -10x = -20x 145 + -20x = -35 + 10x + -10x
 
Combine like terms: 10x + -10x = 0 145 + -20x = -35 + 0 145 + -20x = -35
 Add '-145' to each side of the equation. 145 + -145 + -20x = -35 + -145

Combine like terms: 145 + -145 = 0 0 + -20x = -35 + -145 -20x = -35 + -145

Combine like terms: -35 + -145 = -180 -20x = -180
  Divide each side by '-20'.
x = 9
 Simplifying x = 9.
Hope this helps you ! =')</span>
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44

Step-by-step explanation:

90 - 43 = 47

x + 3 = 47

x = 47 - 3

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I think the answer is 44. Pls check and correct me if I'm wrong.

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An online media service offers video and music downloads. Each download of a song costs $1.50. Each download of a video costs 2
svetoff [14.1K]

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1 pack = $9.45

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So, he saved $3.15, compared to the total ($12.60)

To calculate the percentage, we will do a proportion:

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So the percentage saving is 25%

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