# Homework Help: Write fractional answers as mixed numbers

1. Feb 13, 2006

### Cop

Perform the idicated operations. Write fractional answers as mixed numbers or as proper fractions reduced to lowest terms.

One:
-3-(-4)-|4-7|

Two:

0.096492 ( Divid) 1.72

Simplify:

3(1-5)-[(1-7)(-5)]

-(-{-[-(-64)]})

-|-3+4|+5-7

Evaluate:
c-bc if b=-1 and c= -2

2. Feb 13, 2006

### assyrian_77

What seems to be the problem, what do you need help with? Remember that you need to show what you've done on the problems; solutions are not just handed out.

3. Feb 13, 2006

### marlon

You need to show us what you have done so far. We don't just give answers since that we be a violation of the PF Guidelines you agreed with when signing up to this forum.

Let me give you a hint : do you know the "order of execution" of the different mathematical operations ? Like, for example, multiplication has a priority over addition or subtraction...

and

-*-= +
-*+ = -
+*- = -
+*+ = +

So -(-4) = (-1)*(-1)*4 = 4

I will solve this one to show you :

-(-4) = +4

-3+4-|-3| = -3+4-3 sine |-3| = 3

Thus : -6 + 4 = -2

marlon