How do you solve 7x + 30=517x+30=51?
2 Answers
Apr 22, 2018
Explanation:
Take away the constant…
Divide by
You can check by using the equation:
Apr 22, 2018
Explanation:
"isolate 7x by subtracting 30 from both sides of the "
"equation"
7xcancel(+30)cancel(-30)=51-30
rArr7x=21
"divide both sides by 7"
(cancel(7) x)/cancel(7)=21/7
rArrx=3" is the solution"
color(blue)"As a check"
(7xx3)+30=21+30=51="right side"