3[x + 3(4x – 5)] = 15x – 24

Step-by-step explanation:

Distribute 3 through the parentheses

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Collect like terms : 12x and x

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Distribute 3 through the parentheses

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Move 15x to left hand side and change it's sign

Similarly, move 45 to right hand side and change it's sign

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Collect like terms

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Calculate

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Divide both sides of the equation by 24

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Calculate

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Hope I helped!

Best regards! :D

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