Solve the problem what is (4r3 + 3r4) - (r4 + 5r3)

First you can also remove parenthesis first.

And it gave us ⇒ , ,, , and .

Finally, you add similar elements.

And it gave us ⇒ .

Final answer is ⇒

Hope this helps!

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-Charlie

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer