Solve for b

-11b +7=40

what does b equal?

I will give you BRAINLIEST

b=-3

Step-by-step explanation:

-11b +7=40

first subtract 7 on both sides

-11b+7-7=40-7

-11b=33

now divide both sides by -11

-11b/-11=33/-11

b=-3

ANSWER CHECK

to check the answer substitute the solution for B

-11(-3)+7=40

-11(-3)=33

33+7=40

40=40

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

c.

step-by-step explanation: