Решите пж понятно
3 1/5:(z-1/2)=2 2/3:(z+1/3)

спс

стой

объясни

почему 8/3 *1/2=8,6?

2 2/3 * ( z - 1/2 ) = 3 1/5 * ( z + 1/3)8/3 *( z - 1/2 ) = 16/5 * ( z + 1/3)8/3z - 8/6 = 16/5z + 16/158/3z - 16/5z = 16/15 - 8/640/15z - 48/15z = 16/15 + 20/15-8/15z = 36/15z = -36/15 * 15/8z = -4,5

2 2/3 * ( z - 1/2 ) = 3 1/5 * ( z + 1/3)8/3 *( z - 1/2 ) = 16/5 * ( z + 1/3)8/3z - 8/6 = 16/5z + 16/158/3z - 16/5z = 16/15 + 8/640/15z - 48/15z = 16/15 + 20/15-8/15z = 36/15z = -36/15 * 15/8z = -4,5