Search 75,808 tutors
FIND TUTORS
Ask a question
0 0

Seven times the sum of a number and nine is 7

Tutors, please sign in to answer this question.

1 Answer

Hi Jess;
7(x+9)=7
Let's divide both sides by 7...
[7(x+9)]/7=7/7
x+9=1
Let's subtract 9 from both sides...
x+9-9=1-9
x=-8
Let's check our work...
7(x+9)=7
7(-8+9)=7
(7)(1)=7
7=7