Register
Value of X? 7x+3x=90?
153k views
1 vote
Value of X?
7x+3x=90?

User Shiblon
by
8.0k points

2 Answers

7 votes
7x+3x=90
7x+x=90-3
7x+x=87
X^2=87-7
X^2=80
(Take the square root of both X^2 and 80)
*answer= 8.94 (round off to whole number =9)


(Proof check yourself)
User Sebastian Hojas
by
7.9k points
4 votes
10x=90
X=9

To check

7 (9) + 3 (9)
63+27
=90
User Rebellion
by
8.8k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!