What is 7/10 - 5/12 PLEASE HELP

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76