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Q: What is 3x plus 7x plus 5 equals?

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7x - 9 = 3x + 5 7x - 3x - 9 = 5 7x - 3x = 5 + 9 4x = 14 x = 14/4

It is a linear equation in one variable, x.

It is a linear equation in x. 10x = 7x + 15 3x = 15 x = 5

7x + 5 + 3x is [ 10x + 5 ].That's the same thing as [ 2 times (5x + 1) ] .

If: y = 3x+4 and y = 2-7x Then: 3x+4 = 2-7x So: 3x+7x = 2-4 => 10x = -2 => x = -1/5 By substitution: y = 17/5 Solution: x = -1/5 and y = 17/5

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7x - 9 = 3x + 5 7x - 3x - 9 = 5 7x - 3x = 5 + 9 4x = 14 x = 14/4

combine like terms. 3x+1+4x-5=31 3x+4x=7x 7x+1-5=31 1-5=-4 7x-4=31 then solve it 7x=35 x=5

It is a linear equation in one variable, x.

It is a linear equation in x. 10x = 7x + 15 3x = 15 x = 5

7x + 5 + 3x is [ 10x + 5 ].That's the same thing as [ 2 times (5x + 1) ] .

(3x+2)-(5+7x) = 3x+2-5-7x = -4x-3 3x+2 is -4x-3 times greater than 5+7x.

If: 4x+3x = 35Then: 7x = 35So: x = 35/7 => x = 5

You're asking for the difference: (3x + 2) - (5 - 7x).(3x + 2) - (5 - 7x) =3x + 2 - 5 + 7x =10x - 3.It is (10x - 3) greater.

If: y = 3x+4 and y = 2-7x Then: 3x+4 = 2-7x So: 3x+7x = 2-4 => 10x = -2 => x = -1/5 By substitution: y = 17/5 Solution: x = -1/5 and y = 17/5

-3x + 10x - 5 + 26 = 7x + 21

Double first equation: 10x + 2y = 10Subtract second equation: 7x = 7x = 1, y = 0

6x2 + 7x - 5 = (3x + 5)(2x - 1)

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