Question

Evaluate 7 3 4 + ( − 2 1 5 ) x 734+-215x for x = − 10 x=-10.

Answer 1

2884

Explanation:

First plug in -10 for x, which would look like this: 734 + (-215 * (-10) ) =

Then, first you calculate everything in the parenthesis, which is (-215) * (-10)

and the equation would look like this after you multiply: 734 + 2150 =

If you noticed the number turned out positive after we multiplied, that is because - number times a - number would always be positive, just like if you divide - number by a - number your answer would be positive.

Your last step would be adding 734 with 2150. : 734 + 2150 = 2884

+ 734

2150

_____

2884

And the answer would be 2884

Answer 2

`29(3)/(4)`

Explanation:

The given expression is:

`7 (3)/(4)+(-2 (1)/(5)) x`

The problem is asking to evaluate this expression with
`x=-10`

So, replacing this value, we have:

`7(3)/(4)+(-2 (1)/(5)) (-10)\\(31)/(4)+(11)/(5)10\\(31)/(4)+(110)/(5)\\(155+440)/(20)\\ (595)/(20)=29.75=29(3)/(4)`

Therefore, the result is 29
`(3)/(4)`