Question

In solving the following system by the substitution method, select the one step which could occur.
4x+3y=38
x+y=15
A. 4x+3y=x+y
B. 4x+3(15-x)=38
C. 4x+3(15-x)=15
D. 4x+3(x-15)=38

Answer 1

THE ANSWER IS: b

Answer 2

take the 2nd equation and rewrite it

x+ y = 15 becomes y = 15 - x

substitute this into the 1st equation

Answer 3

i am unreliable answerer :o

Answer 4

the answer isn't D

Answer 5

Muahaha:3 I am smart after all.

Answer 6

one of the suggestions of Open Study... is to assist in understanding and not just give answers..

Answer 7

I deeply apologize