choose the new equation after the expression equivalent to x from the second equation is substituted into the first equation of these two3x + 2y = –21and x – 3y = 4. Here are the choices.

A)3x + 2(3y + 4) = –21
B)3x + 2(–3y + 4) = –21
C)3(3y + 4) + 2y = –21
D)3(–3y + 4) + 2y = –21

I need a quick answer please and thank you :)

Question

choose the new equation after the expression equivalent to x from the second equation is substituted into the first equation of these two3x + 2y = –21and x – 3y = 4. Here are the choices.

A)3x + 2(3y + 4) = –21
		B)3x + 2(–3y + 4) = –21
		C)3(3y + 4) + 2y = –21
		D)3(–3y + 4) + 2y = –21

I need a quick answer please and thank you :)

anonymous · Answer

C) 3(3y + 4) + 2y = –21  is the right option

anonymous · Answer

3x + 2y = –21and 
x – 3y = 4   ==>x = 3y + 4

so first becomes (on substitution)
3(3y + 4) + 2y = –21

anonymous · Answer

Thanks alot for the help :)

anonymous · Answer

welcome ....☺

hero · Answer

Needhelp, I responded to the previous question you posted.

anonymous · Answer

oh thank you too :)