Question

а)8x - 5 = x - 40 б)9 + 13y = 25 +26y в)6s +(3s - 2) = 14 срочно

Answer 1

$\displaystyle 1)8x-5=x-40\\8x-x=-40+5\\7x=-35\\x=-5\\\\2)9+13y=25+26y\\13y-26y=25-9\\-13y=16\\\\y=-\frac{16}{13}=-1\frac{3}{13}\\\\3)6s+(3s-2)=14\\6x+3s-2=14\\9s-2=14\\9s=14+2\\9s=16\\\\s=\frac{16}{9}=1\frac{7}{9}$