Tuesday

March 31, 2015

March 31, 2015

Posted by **Taylor** on Monday, August 27, 2012 at 9:38pm.

15-6/3.2+7-1

- pre algebra -
**josiah**, Monday, August 27, 2012 at 10:09pmI got 20 because you have to PEMDAS which is Parentheses Exponents Multiplacation Division Addition Subtraction. 15-6/3.2+7-1 First you have multiply 3 & 2 and you get 6. then you divide 6 by 6 and get 1. Then you minus 1 from 15 that equals 14 because you have to add and subtract from left to right. Then 14 + 7 = 21-1=20

- pre algebra -
**Anonymous**, Monday, August 27, 2012 at 10:32pm6/3.2 = 1.875

15 - 1.875 = 13.125

13.125 + 7 = 20.125

20.125 - 1 = 19.125

Answer = 19.125

- pre algebra -
**Steve**, Tuesday, August 28, 2012 at 12:09pmor, if as josiah interpreted, 3.2 = 3•2, then, since multiplication/division are done left-to-right, we have

15-6/3.2+7-1

15-2•2+7-1

15-4+7-1

17

How important are parentheses!

**Answer this Question**

**Related Questions**

7th grade pre-algebra - How to write an expression for the perimeter of the ...

Pre-Algebra - Evaluate the expression. 1. (18 + 9) + 11 2. 8(-2)(5) 3. 1.2 + 4....

algebra - Find the smallest integer x where the expression srt(x-2)/x^2+x-6 is ...

algebra - here is a rational expression, 20+2x/5-x for what value of x is the ...

Algebra - How do you get the vertex of this absolute value? y = -2 |4x - 1| + 16...

pre-algebra(algebra) - I'm not sure if I have the correct answer to this problem...

pre-calc - find the exact value of the given expression. Thank you! tan(1/2cos^-...

Pre cal - how would you find the exact value of this expression?? 2sin15°cos°

Pre-algebra - Simplify the expression (8•5)•1

Pre-Algebra - Simpliby an expression (3(4))2