Question

Решите уравнение пожалуйста. -3•(x-5)+4(x-5(x-4(x-4(x-3(2-x))))

Answer 1

$-3(x-5)+4\Big (x-5(x-4\Big (x-4(x-\underbrace {3(2-x)}_{6-3x})\Big ))\Big )=\\\\=-3x+15+4\Big (x-5(x-4\Big (x-4(x-6+3x)\Big ))\Big )=\\\\=-3x+15+4\Big (x-5(x-4\Big (\underbrace {x-4(4x-6)}_{x-16x+24}\Big ))\Big )=\\\\=-3x+15+4\Big (x-5\underbrace {(x-4\Big (-15x+24\Big )}_{x+60x-96})\Big )=\\\\=-3x+15+4\Big (\underbrace {x-5(61x-96)}_{x-305x+480}\Big )=\\\\=-3x+15+4\Big (-304x+480\Big )=\\\\=-3x+15-1216x+1920=-1219x+1935$