Answer:
x= 1
y= -1
Step-by-step explanation:
y=-2x+1
2x-2y=4
substitute for y
2x-2(-2x+1)=4
reduce
2x+4x-2=4
6x=6
x=1
y= -2(1)+1
y= -1
-4
Step-by-step explanation:
-4z² + z²
let's assume you have z² and you're owing 4z², you'll pay the z² you have and you'll still owe 4
so that is -4
Isolate the variable by dividing each side by factors that don't contain the variable. p=q/2r
Combine like terms the solve. For example:
5x + 20x = 100
25x = 100
/25 = /25
x =4
One side is 9.
second side (3x+1) is 28.
third side (4x-9) is 27.
