2x – 7 = 5x + 8
solve for x

-5=x

Step-by-step explanation:

2x-7=5x+8

get like terms on the same side

-7-8=5x-2x    (I did this in one step hope you understand if not i can explain)

simplify

-15=3x

divide both sides by 3

-5=x

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

step-by-step explanation:

idk the answer i want to say 10 but then it would be equal so try 9 but then yeah so yeah we love edgen