X+y=30
2x-3y=5
y=30-x
2x-3(30-x)=30
2x-90+3x=30
5x=120
x=24
y=30-x
y=30-24
y=6
The positive difference between the two numbers is 18.
Answer: (-9, -3.4)
x = -9
y = -3.4
Step-by-step explanation:
-2.1x+4y=5.3
2.1x-5.5y=-0.2
0-1.5y=5.1
-1.5y=5.1
y=-3.4
Then plug in -3.4 for y in the first equation to get x = -9
Hope it helps <3
A, x=-5, use distributive property
Answer:
12
Step-by-step explanation:
If you solve the second equation and substiture to the first, you get y = 5, and x = -7.
5-(-7) = 5+7=12
