Number sense margo found that 3 x 741 = 2,223. how could ypu use mental math to find the product of 6 x 741

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

Solve: 3x+y=6 4x-2y=18 show all work !