tell whether the equation is true, false, or open.

77+(-11)=66

The equation 77+(-11)=66 is false.

To determine whether the equation is true, false, or open, we need to solve it.

77 + (-11) simplifies to 77 - 11.

77 - 11 equals 66.

Therefore, the equation 77 + (-11) = 66 is true.

To determine whether the equation is true, false, or open, we need to evaluate the expression on both sides of the equation.

On the left side, we have 77 + (-11). To solve this, we add 77 and -11 together:
77 + (-11) = 66.

On the right side, we have 66.

Since both sides of the equation evaluate to the same value, in this case, 66, we can conclude that the equation is true.

Therefore, the equation 77 + (-11) = 66 is true.