Give+an+example+of+a+system+of+3+equations+with+3+unknowns. +Ask+your+classmate+to+demonstrate+how+to+solve+for+one+variable+in+particular+(you+decide).+Set+6

Given code format="text" 8x+20y-13z=271 x+2z=31 10y-6z=122 code Find y using substitution.