Пожалуйста посчитайте пожалуйста с Алгеброй 7 клас ​

1)

x=-frac {1}{18}" title="- 6x = frac{1}{3} \ x=frac {frac {1}{3}}{-6}\

x=-frac {1}{18}" alt="- 6x = frac{1}{3} \ x=frac {frac {1}{3}}{-6}\

x=-frac {1}{18}" />

2)

frac {1}{10}x=-frac {275}{100}\

x=frac {frac {275}{100}}{frac {1}{10}}\

x=frac {275*10}{100*1}\

x=frac {275}{10}\

x=27.5" title="0.1x = - 2.75\

frac {1}{10}x=-frac {275}{100}\

x=frac {frac {275}{100}}{frac {1}{10}}\

x=frac {275*10}{100*1}\

x=frac {275}{10}\

x=27.5" alt="0.1x = - 2.75\

frac {1}{10}x=-frac {275}{100}\

x=frac {frac {275}{100}}{frac {1}{10}}\

x=frac {275*10}{100*1}\

x=frac {275}{10}\

x=27.5" />

3)

x=12*3\ x=36" title="frac{1}{3} x = 12\

x=12*3\ x=36" alt="frac{1}{3} x = 12\

x=12*3\ x=36" />

4)

x=-frac {frac {10}{49}}{frac {5}{7}}\

x=-frac {10*7}{49*5}\

x=-frac {2*1}{7*1}\

x=-frac {2}{7}" title="frac{5}{7} x = - frac{10}{49}\

x=-frac {frac {10}{49}}{frac {5}{7}}\

x=-frac {10*7}{49*5}\

x=-frac {2*1}{7*1}\

x=-frac {2}{7}" alt="frac{5}{7} x = - frac{10}{49}\

x=-frac {frac {10}{49}}{frac {5}{7}}\

x=-frac {10*7}{49*5}\

x=-frac {2*1}{7*1}\

x=-frac {2}{7}" />