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