Arrange the equations in descending order (starting from the top) based on the values of x obtained.

4x+15 = 20+3x

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2x+7 = 10+x

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2x+3 = 4+x

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5x+2 = 10+4x

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Solution

4x+15 = 20+3x
Rearrange the constants on one side and variables on the other side.
We get,
4x-3x = 20-15
On simplifying, we get x = 5.

2x+7=10+x
Rearrange the constants on one side and variables on the other side.
We get,
2x-x = 10-7
On simplifying, we get x = 3.

2x+3 = 4+x
Rearrange the constants on one side and variables on the other side.
We get,
2x-x = 4-3
On simplifying, we get x = 1.

5x+2 = 10+4x
Rearrange the constants on one side and variables on the other side.
We get,
5x-4x = 10-2
On simplifying, we get x = 8.

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