Proszę o pomoc ! Pilne !
a)7a+3b+4c+5a-2b-8c
b)2a-4b-5c-6a-3b+2c
c)4a-2b+3-3a+6b-9
d)-4a+5b-7-2a-3b+3
e)3x+5y-4x+6y-7x-9y
f)-5x+2y-4x+5y+6x-3y
g)-2x+3y+3-2y-3x-4+y-4x+2
h)x-2y-4-2x-5+y-3+2x-6y
i)212x-323y-223y-5x+a-13
j) 4,5ab+212ba-527abc-312ba+37cab+acb- abd

Find the volume of the largest rectangular box in the first octant with three faces in the coordinate planes and one vertex in the plane x + 2y + 3z = 15.

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

The volume, v, of a rectangular prism is determined using the formula, where / is the length, w is the width, and his theheight of the prism. carltren solves for w and writes the equivalent equation w=using this formula, what is the width of a rectangular prism that has a volume of 138.24 cubic inches, a height of 9.6 inches,and a length of 3.2 inches?