Question

reduza os termos semelhantes:

7x - 15 + 8 - 4x - 3x =
xy - z + x + y - z - 7x =
ab + bc + ac - 4a + ac - a - 1/2

Answer 1

7x-4x-3x-15+8=
3x-3x-7=
-7

xy-z-z+x-7x+y=
xy -2z -6x +y.

ab +ac+ac -4a -a -1/2+bc =
ab +2ac -5a +bc -1/2=
a(b+2c-5) +bc -1/2