I never seen two pretty best friends

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?