Question

Evaluate the following expression for b = -10.
2 (b - 5) + 4

Answer 1

-26

Explanation:

We substitute b for -10, so 2 ((-10) - 5) + 4

Using PEMDAS, we do the parenthesis first: 2 ((-10) - 5) + 4 = 2 (-15) + 4

Then we multiply: 2 (-15) + 4 = (-30) + 4

And finally, we add: (-30) + 4 = -26

Answer 2

−26 and (−1)×2×13=-26

Explanation:

2(−10−5)+4

Subtract 5 from −10 to get −15.

2(−15)+4

Multiply 2 and −15 to get −30.

−30+4

Add −30 and 4 to get −26.

−26