PEMDAS 5-8+2 algebra help?
Order of operations
And also can you help me with
15-2(5+1)+3^2
I dont get how to do this im new to algebra can you explain
Thank you
Order of operations
And also can you help me with
15-2(5+1)+3^2
I dont get how to do this im new to algebra can you explain
Thank you
Comments
...but this is ARITHMETIC !
P (parentheses)
E (exponents)
MD (multiplication/division)
AS (addition/subtraction)
15 - 2(5 + 1) + 3^2 = 15 - 2(6) + 3^2 = 15 - 2(6) + 9 = 15 - 12 + 9 = 12
If you can't do these problems, go to your teacher form help...this is FUNDAMENTAL !
id est
Operations that are at the same level...
(multiplication/division) and (addition/subtraction)
are done from LEFT TO RIGHT !
addition DOES NOT come before subtraction !
People should read their textbooks...
(P)arenthesis
(E)xponent
(M)ultiply
(D)ivide
(A)dd
(S)ubtract
PEMDAS should apply to every equation you ever solve so remember it. Basically you do exactly what it says in the that order.
Ex. 5-8+2=?
Since addition is before subtraction in the word PEMDAS you add first.
So you have... 5-10=?
And finally... = 5
For the harder one you do the parenthesis first of course so...
Ex.15-2(5+1)+3^2=?
15-2(6)+3^2=?
Now do exponents...
15-2(6)+9=?
Now multiply...
15-12+9=?
Now add...
15-21=?
Finally subtract...
= -6
(5+1)=6
15-2=13
13x6=78
78+3x3=9+2=11
The answer is 11!
Yay, I did it but probably got it wrong.