Найдите корень уравнения; 3/5(7/9х-1/3)=х-2 1/3 срочно....
3/5 • (7/9х - 1/3) = х - 2 1/3 3•7х/(5•9) - 3•1/(5•3) = х - 7/3 7х/15 - 1/5 = х - 7/3 х - 7х/15 = 7/3 - 1/5 15х/15 - 7х/15 = 35/15 - 3/15 8х/15 = 32/15 х = 32•15/(8•15) = 32/8 = 4 х = 4