How do you solve #7x + 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"#