Can someone help solve, 3y+6=30-7y

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

What term best describes a line and a point that lie in the same plane? a. congruent b. coplanar c. collinear d. equal

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa