Question

1.45 + -1/5 + -5/8

faststtttt and please explain how you get it

Answer 1

Answer: 5/8

Explanation:

remove the +'s because -'s are more valued. -1/5 is 0.2 and because we're subtracting 1.45-0.2 its 1.25. -5/8 = 0.625 and if you subtract 1.25-0.625 its 0.625 so its just 5/8

Answer 2

`(5)/(8) .`

Explanation:

1. Write the expression.

`1.45 + (-(1)/(5) )+ (-(5)/(8) )`

2. Rewrite the signs.

`1.45 -(1)/(5) -(5)/(8)`

3. Convert all numbers into fractions.

`(145)/(100) -(1)/(5) -(5)/(8)`

4. Simplify the first fraction.

`(145/5)/(100/5) -(1)/(5) -(5)/(8)\\ \\(29)/(20) -(1)/(5) -(5)/(8)`

5. Find a common denominator between the 3 fractions by multiplying their terms.

Note. You always need to multiply each fraction by the same number on both numerator and denominator.

`(29*2)/(20*2) -(1*8)/(5*8) -(5*5)/(8*5)\\ \\(58)/(40) -(8)/(40) -(25)/(40)`

6. Rewrite and solve.

`(58-8-25)/(40) \\ \\(25)/(40)`

7. Simplify the fraction.

`(25/5)/(40/5)\\ \\(5)/(8)`

8. Express your result.

`1.45 + (-(1)/(5) )+ (-(5)/(8) )= (5)/(8) .`