<span>2 1/3х = 8/9 * 3/4 - 1 3/5 * 5/16
2 1/3х = 2/3 - 8/5 * 5/16
2 1/3х = 2/3 - 5 3/25
2 1/3х = 50/75 - 5 9/75
2 1/3х = - (5 9/75 - 50/75)
2 1/3х = - (4 84/75 - 50/75)
</span>2 1/3х = - 4 34/75
х = - 4 34/75 : 2 1/3
х = - 334/75 : 7/3
х = - 1 159/175
1/3a-1/2b+1/3b-1/5a=1/3a-1/5a-1/2b+1/3b=5/15a-3/15a-3/6b+2/6b=2/15a-5/6b