How do you solve #8x + 3x = 121#?

1 Answer
Feb 23, 2017

Answer:

#x=11#

Explanation:

Simplify the left side by collecting like terms.

#rArr8x+3x=121#

#rArr11x=121#

To solve for x, divide both sides of the equation by 11

#(cancel(11)^1 x)/cancel(11)^1=121/11#

#rArrx=11#

#color(blue)"As a check"#

Substitute this value into the left side and if equal to the right side then it is the solution.

#(8xx11)+(3xx11)=88+33=121#

#rArrx=11" is the solution"#