SOLUTION: hey this is exactly what my worksheet says. Simplifying Expressions. 1.(7x-2y+5)+(2x+5y-4) 2.(3x+5xy+2y)+(4-3xy-2x) 3.-2[2a-(4a-2)-2(7-3a)]

Algebra ->  Expressions -> SOLUTION: hey this is exactly what my worksheet says. Simplifying Expressions. 1.(7x-2y+5)+(2x+5y-4) 2.(3x+5xy+2y)+(4-3xy-2x) 3.-2[2a-(4a-2)-2(7-3a)]      Log On


   

Question 48999: hey this is exactly what my worksheet says.
Simplifying Expressions.

1.(7x-2y+5)+(2x+5y-4)
2.(3x+5xy+2y)+(4-3xy-2x)
3.-2[2a-(4a-2)-2(7-3a)]
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
1.(7x-2y+5)+(2x+5y-4) [Combine like-terms only]
9x+3y+1
.
2.(3x+5xy+2y)+(4-3xy-2x) [Combine like-terms only]
x+2xy+2y+4
.
3. -2[2a-(4a-2)-2(7-3a)] [Use the order of operations (PEMDAS)]
-2[2a-4a+2)-2(7-3a)][Multiply within the brackets]
-2[2a - 4a + 2 - 14 + 6a] [Combine like-terms]
-2[-2a - 12 + 6a)] [Combine like-terms]
-2[4a - 12] [Multiply outside of the brackets]
-8a + 24