Question

21-х/10-5х-1/12+3(х-1)/4=4
СРОООЧНО!

Answer 1

$21 - frac{x}{10} - 5x-frac{1}{12}+frac{3*(x-1)}{4}=4 \21-frac{x}{5*2} - 5x - frac{1}{2*2*3}+frac{3*(x-1)}{2*2}=4\frac{1260-6x-300x-5+45(x-1)}{60}=4\1255-306x+45x-45=240\1210-261x=240\261x=970\x=frac{970}{261}$