find the value of x

Algebra Level 1

-2x-12=-42


The answer is 15.

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

9 solutions

Prasun Biswas
Mar 13, 2014

Given equation is -----> 2 x 12 = 42 -2x-12=-42 . So----

2 x 12 = 42 -2x-12=-42

2 x = 42 12 \implies 2x=42-12

2 x = 30 x = 30 2 x = 15 \implies 2x=30 \implies x=\frac{30}{2} \implies x=\boxed{15}

its simple

Rostam Dana - 6 years, 8 months ago
J Lim D'Dreamerz
Mar 3, 2014

-2x - 12 = -42 -2x = -42 + 12 -2x = -30 2x = 30 x = 30/2 x= 15

Brady Adams
Aug 19, 2014

(-2x-12=-42) --> add 12 on each side (-2x=-30) --> multiply both sides by -1 (2x=30) --> divide both sides by 2 (x=15)

Saurabh Mallik
Jun 14, 2014

Given equation.

2 x 12 = 42 -2x-12=-42

2 x = 42 + 12 -2x=-42+12

2 x = 30 -2x=-30

x = 15 x=15

Thus, the answer is: x = 15 x=\boxed{15}

-2x=-42+12;-2x=-30;x=-30/-2=15

Given Equation -2x -12 = -42
Combine like terms: -2x=-42 + 12
Answer: -2x=-30
Eliminate the numerical coefficient: -2x/2=-30/2
Final Answer: x=15



Dibyadarshan Pati
Mar 28, 2014

Simplifying -2x + -12 = -42

Reorder the terms: -12 + -2x = -42

Solving -12 + -2x = -42

Move all terms containing x to the left, all other terms to the right.

Add '12' to each side of the equation. -12 + 12 + -2x = -42 + 12

Combine like terms: -12 + 12 = 0 0 + -2x = -42 + 12 -2x = -42 + 12

Combine like terms: -42 + 12 = -30 -2x = -30

Divide each side by '-2'. x = 15

Simplifying x = 15

Yuvraj 007
Mar 23, 2014

-2x -12= -42 -2x= -42+ 12 -2x= -30 x= -30/ -2 x= 15

Tushar Chaudhary
Mar 22, 2014

-2x - 12 = -42 -2x = -42 + 12 -2x = -30 2x = 30 x = 30/2 x= 15

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...