n 11 -5 + 1 = -5 swered out of on Step Property Used Step One Step Two Step Three Step Four Multiplication Property of Equality Division Property of Equality Addition Property of Equality Combine Like Terms Distributive Property Subtraction Property of Equality Simplify -5+5+n/1=-5+5 -5(1)+n/1(1)=-5(1) -5+n=-5 n/1=-10 n/1=0 n/1(1)=0(1) n=0 n=-10

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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

45

step-by-step explanation: