For each equation choose a value for x and then solve to find the corresponding y value that makes that equation true.

6x = 7y
5x+3y = 9
y+5−13x = 7

Simplify the expression 10/11(22z) + (a+5) -1

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b