A common denominator is when the denominators of two or more fractions are the same. true or false?

Mathematics

1 answer:

luda_lava [24]3 years ago

6 0

This is true. you generally find common denominators to easily add, subtract, multiply and divide fractions

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Answer:

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Step-by-step explanation:

let x represent the first number. 2x+6 would represent the second number since it's 6 more than (which would be addition) twice the first number (so you'd multiply the first number (which is represented by x) by 2. then, you'd set up the equation to be equal to 87.

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Hello from MrBillDoesMath!

Answer:

(1/8) ( 7 + sqrt(481) )

(1/8) ( 7 - sqrt(481) )

Discussion:

The equation is equivalent to 4x^2 - 7x -27 = 0 (as 3 + 24 = 0), Using the quadratic formula:

x = ( - (-7) +\- sqrt ((-7)^2- 4*4*(-27)) )/ (2*4)

= (1/8) ( 7 +\- sqrt(49+ 432) ) =

= (1/8) ( 7 +\- sqrt(481))

Regards,

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