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Value of X? 7x+3x=90?
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1 vote
Value of X?
7x+3x=90?

User Shiblon
by
5.6k 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
5.9k points
4 votes
10x=90
X=9

To check

7 (9) + 3 (9)
63+27
=90
User Rebellion
by
6.3k points
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