Athena F.
asked 02/25/21If , 2x-3/x+6=3/2 what is the value of x ?
The slashes are for fractions
2 Answers By Expert Tutors
Katharine S. answered 02/26/21
Great Math Tutor
So we start with:
(2x-3)/(x+6) = (3)/(2) I'm putting all numerators and denominators in parenthesis for now
Our goal is to get "x" by itself. A pretty big obstacle is the large fraction on the left side of the equation. How will I simplify it? Multiply both sides of the equation by (x+6), because on the left side it will cancel out the denominator of that fraction, and of course what you do on one side, you have to do to the other to maintain balance. 3743
So, multiply each side by (x+6):
(x+6) * {(2x-3)/(x+6)} = 3(x+6)/(2)
On the left side, the (x+6)'s both cancel. On the right, I'm going to multiply out the 3 on the numerator.
2x - 3 = (3x + 18) / 2
We still have another fraction, and to get rid of this one, we multiply both sides of the equation by 2.
2(2x - 3) = { (3x + 18) / 2 } * 2
Multiply out the 2 on the left side of the equation, using the distributive property. And on the right side of the equation, the 2's cancel out.
4x - 6 = 3x + 18
From here, we combine our like terms. Lets subtract 3x on both sides of the equation.
x - 6 = 18
Add 6 to both sides
x = 24
Sam Z. answered 02/26/21
Math/Science Tutor
2x-3/x+6=3/2
4x-6/x+12=3
4x-6/x=-9
x=-2.79
Athena F.
I am the one who posted this question and this answer dose not match up with what was given A)15 B)25 C)9 D)1202/26/21
Sam Z.
Try -2.79; I get 1.5.02/26/21
Katharine S.
I get that you multiplied by 2 on both sides first, but why did you multiply the 6 in the denominator? The right side should cancel, and the left side you would only multiply the numerator02/26/21
Sam Z.
I made 3/2 into a whole #. Remember what you do to one side; you've got to do to the other. Also; because the problem is NOT multiplied; You've got to multiply each.02/26/21
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David W.
02/25/21