Question

resultado de ecuacion 3x+3y=3

Answer 1

3x+3y=3
3x=3-3y
x=3-3y/3
x=3(1-y)/3
x=1-y
3x+3y=3
3y=3-3x
y=3-3x/3
y=3(1-x)/3
y=1-x