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"
Apr 21, 2018
Explanation:
Firstly, remember whatever we do to one side, we must do to the other.
Isolate
Isolate