How to solve - 7-8 (6x+5)

Question

Mathematics

Porter Vega

11 October, 16:04

How to solve - 7-8 (6x+5)

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Answers (1)

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Zion · Answer 1

Answer: - 47 - 48x

Step-by-step explanation: When you first take a look at this problem, it's tempting to want to subtract - 7 - 8 to get - 15 and then distribute the - 15 through the parentheses.

You wouldn't want to subtract however before you distribute because the distributive property is a form of multiplication and remember from your order of operations that multiplication comes before subtraction.

So the first thing you want to do here is distribute and change the minus sign in front of the - 8 to plus a negative 8 so that you know you are distributing a - 8 through your parentheses.

So we have - 7 + - 8 times 6x which is - 42x + - 8 times 5 which is - 40.

Now we have - 7 + - 48x + - 40.

Now just combine your like terms. - 7 + - 40 is - 47 and plus a negative 48x can be written as - 48x so we have - 47 - 48x.

So your answer is just - 47 - 48x.