X value is -1. y value is 21
Answer:
im gonna assume the 10 - 20 is what the equation is = to if not x wouldnt be = to anything x = -1.5
Step-by-step explanation:
-2.25x + 8.75x = 10-20
-2.25x+ 8.75x = -10
6.50x = -10 divide both sides by 6.5
x = -1.5
Step-by-step explanation:
use substitution method so it will now look like
8x + 5(-4x) = 24
8x + (-20x) = 24
-12x = 24 (divide both sides by 12)
-x = 2 (multiply both sides by negative 1)
x = -2
substitute to find y
y= -4(-2)
=8
Answer:
I think something is missing in your question.
sorry