Answer: B. x, in the second equation
Step-by-step explanation:
The given system :

To apply the substitution method , first we need to select the best variable and a equation which is easy to simplify.
From the given system equation (2) have all the numbers which are multiples of 3.
Then we divide 3 on both sides of equation (2), we get

Therefore, the best variable to solve for and from what equation is x, in the second equation.
Answer:
yo answer woud be b √5/4
Step-by-step explanation:
Answer:
6/7/8.9
Step-by-step explanation:
4x7=28
6x2=12
3-28+7-12
-25+7-12
-25+(-5)
(-30)
Answer:
22
Step-by-step explanation:
5 1/2 divided by 1/4 is the same thing as times 4
5 1/2 times 4 equals 22 since 5*4 is 20 and 1/2 times 4 is 2
20+2 equals 22