212k views
4 votes

9x + 7 = 52

User Gareth
by
7.6k points

2 Answers

7 votes

Hey!


Let's switch the equation around:



52 - 7 = 9x


The sign changes when moved to the other sign. At first, it was (+), now it's (-).


First do 52 - 7



52 - 7 = 45


That leaves you with:



45 = 9x


Divide both sides by 9



(45)/(9) = (9x)/(9)



\framebox{x = 5}

User Elveatles
by
7.8k points
2 votes

Hey there! :)


9x + 7 = 52


Subtract 7 from both sides.


9x = 52 - 7


Simplify.


9x = 45


Divide both sides by 9.


9x ÷ 9 = 45 ÷ 9


Simplify.


x = 5


~Hope I helped!~

User Jakubka
by
8.3k points