Solve for x:
-15x + 5 = -10x + 25

-4 (negative 4)

Step-by-step explanation:

-15x + 5 = -10x + 25

First subtract 5 from both sides

-15x = -10x +20

Then, add 10x to both sides

-5x = 20

Now, Divide both sides by -5

x = -4

To check you work substitute x for -4 in the original problem.

-15(-4) + 5 = 65

-10(-4) +25 = 65

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