How do you solve #112 = -u + 179#?

2 Answers
Jan 30, 2018

See a solution process below:

Explanation:

Subtract #color(red)(112)# and add #color(blue)(u)# to each side of the equation to solve for #u# while keeping the equation balanced:

#color(blue)(u) + 112 - color(red)(112) = color(blue)(u) - u + 179 - color(red)(112)#

#u + 0 = 0 + 67#

#u = 67#

Jan 30, 2018

#u=67#

Explanation:

#"isolate - u by subtracting 179 from both sides of the equation"#

#112-179=-ucancel(+179)cancel(-179)#

#rArr-67=-u#

#"multiply both sides by "-1#

#-1xx-67=-1xx-u#

#rArr67=u" or "u=67#