How do you solve #2+6x=7+7x#?
2 Answers
Explanation:
#"collect terms in x on one side of the equation and"#
#"numeric values on the other side"#
#"subtract 7x from both sides"#
#2+6x-7x=7cancel(+7x)cancel(-7x)#
#" subtracting 2 from both sides to get the numeric values"#
#"on one side"#
#rArrcancel2-cancel(2)-x=(7-2)#
#rArr-x=5#
#"multiply both sides by "-1#
#-1xx-x=-1xx5#
#rArrx=-5#
#color(blue)"As a check"# Substitute this value into the equation and if both sides are equal then it is the solution.
#"left "=2+(6xx-5)=2-30=-28#
#"right "=7+(7xx-5)=7-35=-28#
#rArrx=-5" is the solution"#
Explanation:
Firstly, remember whatever we do to one side, we must do to the other.
Isolate
Isolate