PLEASE HELP MEE

Examine this system of equations. Which number can be multiplied by each equation so that when the two equations are added together, the y term is eliminated?

Three-fourths x + two-thirds y = 6

StartFraction 5 Over 8 EndFraction x + five-sixths y = 12

A) 15 times the first equation and 12 times the second equation

B) 15 times the first equation and –12 times the second equation

C) 30 times the first equation and –6 times the second equation

D) 30 times the first equation and 6 times the second equation

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°