Solve the system using elimination.
3x-4y=9
-3x+2y=9
a. (-9,-9)
b. (-27,-9)
c. (3,9)
d. (-3,-6)

The answer is A.

Step-by-step explanation:

A. 3*(-9)=  -27, 4*(-9)= -36, -27-(-36)= 9

B. 3*(-27)= -81, 4*(-9)= -36, -81- (-36) = -45

C. 3*3= 9, 4*9= 36, 9-36= -27

D. 3*(-3)= -9, 4*(-6)= -24, -9-(-24)= 15

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1