1) 5 - 3x + 4 = 17x + 9 - 20x Combine like terms on both sides: 9 - 3x = -3x + 9 -3x = -3x This equation is an identity, meaning it is true for all values of x.
2) 9 - 16y = 20 - 31y + 15y Combine like terms on both sides: 9 - 16y = 20 - 16y -16y = -16y This equation is an identity, meaning it is true for all values of y.
1) 5 - 3x + 4 = 17x + 9 - 20x
Combine like terms on both sides:
9 - 3x = -3x + 9
-3x = -3x
This equation is an identity, meaning it is true for all values of x.
2) 9 - 16y = 20 - 31y + 15y
Combine like terms on both sides:
9 - 16y = 20 - 16y
-16y = -16y
This equation is an identity, meaning it is true for all values of y.