Question

Evaluate the expression 90 = [(82 - 77).91

Answer 1

See below.

Explanation:

Since there is an equal sign, this is not an expression. It is an equation. If you evaluate the right side, you'll see that it is a false equation since both sides are not equal to each other. Also, there is a bracket missing.

90 is not equal to 4.55.

Maybe it is meant to be the following expression:

90 + [(82 - 77).91] = 90 + 5(0.91) = 90 + 4.55 = 4.55

Or maybe this one:

90 - [(82 - 77).91] = 90 - 5(0.91) = 90 - 4.55 = 85.45