Write fractional answers as mixed numbers

[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

 

[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.

 

[marlon]

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

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

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

I will solve this one to show you :

-(-4) = +4

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

Thus : -6 + 4 = -2

marlon