7x + 12 = 13x
to solve this equation for x you must get all the x's together.
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subtract 7x from both sides.
12 = 13x - 7x
combining like terms.
12 = 6x
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we are still trying to get the x by it's self so we must get rid of the 6. the 6 is multiplied by to the x so to get rid of it we must divide.
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divide both sides by 6.
12/6 = (6x)/6
2 = x
the solution to the equation is x = 2
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to check this you can plug x = 2 into the original equation to see if it is true.
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7(2) + 12 = 13(2) ?
14 + 12 = 26
26 = 26
this is true so we solved the equation correctly! :)
7x + 16 = 3x + 4 4x = -12 x = -3
9x-4 = 7x+8 9x-7x = 8+4 2x = 12 x = 6
23
The 7x and the 5x are like terms. This means that you can add them up. Think about it, 7 x's plus 5x's equals 12x's. From there, you can divide 12 from both sides of the equation, and you will get that x = 2.
7x + 12 = 5x + 2 Subtract '12' from both sides Hence 7x = 5x -10 Subtract '5x' from both sides. 2x = -10 Divide both sides by '2' Hence x = -5 .
13x = -156 so x = -12
13x
Since 7x + 13x +2x + 8 is an expression (there is no equal sign), there is no answer as to what x equals. However, this expression can be simplified to 22x + 8.
7x-5+2x=3-4x+12 7x+2x-5=3+12-4x 9x-5=15-4x 9x+4x-5=15-4x+4x 13x-5=15 13x-5+5=15+5 13x=20 13x/13=20/13 x=20/13
7x + 2 = 158 - 6x7x + 2 + 6x = 158 - 6x + 6x13x + 2 - 2= 158 - 213x / 13 = 156/13x = 12
13x
7x + 6x - 1 = 0 7x + 6x = 1 13x = 1 x = (1/13) This is not calculus btw. Its basic algebra.
7x + 7 + 6x - 9 = 13x - 2
Given 6x + (7x-8) = -5 6x + 7x - 8 = -5 ==> 13x = 3 therefore, x = 3/13
7x = 3x - 12 4x=-12 x=-3
x2+7x+12=0 x2+7x=-12 x+Sqaure Root of 7x= 2(SQ Root Symbol)3
It is an expression that can be simplified to: 9-13x