Question

How do you simplify −5(2a−b)−6b?

Answer 1

Answer : -10a - b

Step by step explanation :

$- 5(2a - b) - 6b$

Multiply each term in the parenthesis by - 5

$= > - 5 \times 2a - 5 \times ( - b) - 6b$

Calculate the product.

$= > - 10a - 5 \times ( - b) - 6b$

Multiplying two negatives equals a positive : (-) × (-) = (+)

$= > - 10a + 5b - 6b$

Collect the like terms by subtracting their coefficients

$= > - 10a + (5 - 6)b$

Calculate the difference

$= > - 10a - 1b$

When the term has a coefficient of - 1, the number doesn't have to be written, but the sign remains

$= > - 10a - b$