0
Anonymous
3xy-4x + 15y-20
Sol:
As there are no number are same. So
-4x-3xy
+15y-20
--------------------
-4x-3xy+15y-20
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If: a = b+c+d Then: c = a-b-d
x2+7x+12
b = y - mx.
-2 plus 5 equals +3
you can not solve this equation