How do you solve #[21-31]x=[6-12]#?

1 Answer
Meave60
Dec 1, 2017

#x=3/5#

Refer to the explanation for the process I used.

Explanation:

Solve :

#[21-31]x=[6-12]#

The order of operations are: Parentheses/brackets first, followed by exponents, followed by multiplication and division from left to right, followed by addition and subtraction from left to right.

Simplify the brackets.

#[-10]x=-6#

Multiply #[-10]xx2#.

#-10x=-6#

Divide both sides by #-10#.

#x=(-6)/(-10)#

Simplify.

#x=6/10#

Reduce the fraction by dividing the numerator and denominator by #2#.

#x=(6-:2)/(10-:2)#

Simplify.

#x=3/5#

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