twixer29
30.07.2019 •
Mathematics
Solve for x: 2/5 (x − 2) = 4x. (1 point) i don't understand what to do for this problem. can someone ? ?
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Ответ:
-2/9 =x
Step-by-step explanation:
2/5 (x − 2) = 4x
Multiply each side by 5/2
I do this because we want to get rid of the fraction in the denominator. I also know that the right side has a 4 in the numerator so, the 2 in the denominator that we are multiplying by will cancel.
5/2 *2/5 (x − 2) = 4x*5/2
x-2 = 20/2 x
x-2 = 10x
Subtract x from each side
x-2 -x = 10 -x
-2 = 9x
Divide each side by 9
-2/9 =9x/9
-2/9 =x
Ответ:
x=-2/9
Step-by-step explanation:
First, divide both sides by 2/5
(2/5)*(x-2)/2/5=4x*5/2
x-2=10x, Subtract x from both sides.
-2=9x, Divide both sides by 9
x=-2/9, If you need you can check your answer by substituting the value of x into the original equation.
Ответ:
Well I only have a discord