Suppose a+b=2a. which one of these expressions equals b−a? choose 1 1) 2b 2) 2a 3) a-b 4) -2b 5) -b squared

Hello from MrBillDoesMath!

NONE of the provided answers.

Discussion:

a + b = 2a    =>                             (given)

(a - 2a)  + b =  2a - 2a = 0            (subtract 2a from both sides)

-a + b = 0 =>

b - a =0  

which is NONE of the provided answers.

Regards,  

MrB

P.S.  I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!

the sum of the lengths of any two sides of a triangle is greater than the length of the third side. if you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. if that is not true, then it is not possible to construct a triangle with the given side lengths.

step-by-step explanation:

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step-by-step explanation: