-2x - 5 = -11
-2x+6x-8=12
​

i) 3

ii) 5

Step-by-step explanation:

i) -2x -5 = -11

-2x = -11 + 5

-2x = -6

x = -6 ÷ -2

= 3

ii) -2x + 6x - 8 = 12

-2x + 6x = 12 + 8

-2x + 6x = 20

(-2 + 6) x = 20

4x = 20

x = 20 ÷ 4

= 5

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