How do you solve #-7/9x-2=3#?
1 Answer
Jun 14, 2017
Explanation:
#"add 2 to both sides"#
#-7/9xcancel(-2)cancel(+2)=3+2#
#rArr-7/9x=5#
#"multiply both sides by 9 to eliminate the fraction"#
#cancel(9)xx-7/cancel(9)x=45#
#rArr-7x=45#
#"divide both sides by - 7"#
#(cancel(-7) x)/cancel(-7)=-45/7#
#rArrx=-45/7#
#color(blue)"As a check"# Substitute this value into the left side of the equation and if equal to the right side then it is the solution.
#-cancel(7)/9xx-45/cancel(7)-2=45/9-18/9=3=" right side"#
#rArrx=-45/7" is the solution"#