Question

9-(-5а-10в-4х-2у)-(5а+20в+10х-8у) упростите выражение,пожалуйста даю 32 балла

Answer 1

Пошаговое объяснение:

$9 - ( - 5a - 10b - 4x - 2y) - (5a + 20b + 10x - 8y)= 9-\left(-5a\right)-\left(-10b\right)-\left(-4x\right)-\left(-2y\right)-\left(5a+20b+10x-8x\right) =9+5a+10b-\left(-4x\right)-\left(-2y\right)-\left(5a+20b+10x-8x\right) =9+5a+10b+4x-\left(-2y\right)-\left(5a+20b+10x-8x\right) =9+5a+10b+4x+2y-\left(5a+20b+10x-8x\right) =9+5a+10b+4x+2y-\left(5a+20b+2x\right) =9+5a+10b+4x+2y-5a-20b-2x =9+10b+4x+2y-20b-2x =9-10b+4x+2y-2x =9-10b+2x+2y$

Answer 2

$\displaystyle 9-(-5a-10b-4x-2y)-(5a+20b+10x-8y)=9+5a+10b+4x+2y-\\ \\ 5a-20b-10x+8y=9-10b-6x+10y$