mdaniella522
19.08.2019 •
Mathematics
In 1991 only 344 people owned cellphones in metripolis each year cell phone users has contiuously grown by %72 how many cellphone users were there in 1999?
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Ответ:
k
step-by-step explanation:
Ответ:
7x + 3x − 18 = 6(x + 3) - Given.
10x - 18 = 6(x+3) - Addition property of equality.
10x-18 = 6x + 6 x 3 - Distributive property.
10x - 18 = 6x + 18 - Multiplication property of equality.
4x - 18 = 18 - Subtraction property of equality.
4x = 36 - Addition property of equality.
4x/4 = 36/4 - Division property of equality.
x=9
I hope this helped.
Step-by-step explanation: