Question

The best approach for solving this system by substitution? 5x=+6,2x-3y=4(A solve the second equation for y,(B) solve the first first equation for y (C) solve the second equation for x (D) solve the first equation for x

Answer 1

Answer:

D. Solve the first equation for x

x = 6/5, y = -8/15

Explanation:

5x = 6

x = 6/5 = 1.2

2x - 3y = 4

Substitute in x = 6/5:

2(6/5) - 3y = 4

12/5 - 3y = 4

12/5 - 4 = 3y

12/5 - 20/5 = 3y

3y = -8/5

y = -8/15