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6a - 5b when a = -3 and b = 4

2 Answers

3 votes

Given.

6a - 5b

Plug in values.

6(-3) - 5(4) =

-18 - 20 =

-38

User Justin Wignall
by
8.7k points
3 votes

For this case we have the following expression:


6a-5b

We must evaluate the expression when:


a = -3\\b = 4

Then, replacing the values we have:
6 (-3) -5 (4)

Taking into account that according to the law of the signs of multiplication, it is fulfilled that:


+ * - = -

So:


-18-20 =

Equal signs are added and the same sign is placed:

-38

Answer:

-38

User Obimod
by
8.0k points

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