Answer:
I think its c
Step-by-step explanation:
=(3x-4y)(2x+7y)
=3x(2x+7y)-4y(2x+7y)
=6x²+21xy-8xy-28y²
=6x²+13xy-28y²
hope it helps.
---Cross multiply
2x = 36
---Divide both sides by 2
x = 18
Hope this helps!
