10x + 6 + 2(x + 5) =
= 10x + 6 + 2x + 10 = 12x + 16
6 - 5(x + 2) = 6 - 5x - 10 = -5x - 4
-2x - 10(2 + 4x) =
= -2x - 20 - 40x = -42x - 20
6 - (x + 3) = 6 - x - 3 = -x + 3
3x - (x + 10) + 12 =
= 3x - x - 10 + 12 = 2x + 2
24 minutes long for two students to finish
The greatest common factor: 20x^6y 40x^4y^2 10x^5y^5 is 10x^4y.
20x^6y = 10x^4y*2x^2
40x^4y^2 = 10x^4y*4y
10x^5y^5 = 10x^4y*y^4
-1.1% is the decrease in cost
Not quite sure sorry edit : oh sorry I supposed at this in the comment section