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mylen [45]
3 years ago
10

What is the solution of the equation 3x − 7 = 4x? -7 -1 1 7

Mathematics
2 answers:
gogolik [260]3 years ago
8 0
The solution of this equation is -7.
3x - 7 = 4x
3x - 7 - 4x = 0
3x - 4x - 7 = 0
-x - 7 = 0
-x = 7
x = -7
Viktor [21]3 years ago
7 0
3x-7=4x
3x-4x=7
-x=7   |*(-1)
 x=-7
Answer: -7
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The system of linear equations represents the situation is;

x + y = 125

x + y = 1255x + 8y = 775

<h3>Simultaneous equation</h3>

Simultaneous equation is an equation in two unknown values are being solved for at the same time.

let

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From equation (1)

x = 125 - y

5x + 8y = 775

5(125 - y) + 8y = 775

625 - 5y + 8y = 775

- 5y + 8y = 775 - 625

3y = 150

y = 150/3

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x + 50 = 125

x = 125 - 50

x = 75

Therefore, the number of quick washes and premium washes Monica’s school band had is 75 and 50 respectively.

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brainly.com/question/16863577

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1 year ago
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Tasya [4]

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To simplify a square root: make the number inside the square root as small as possible (but still a whole number)

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Alex777 [14]

Answer:

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