Subtract 15mn - 22m + 2n from 14mn - 12m + 7n.

Solution:

Given that:

Subtract 15mn - 22m + 2n from 14mn - 12m + 7n.

Put like terms at a place

= 14mn - 15mn - 12m - (-22m) + 7n - 2n

= -mn + 10m +5n

Subtract 15mn - 22m + 2n from 14mn - 12m + 7n.

Summary:

By subtracting 15mn - 22m + 2n from 14mn - 12m + 7n, we get -mn + 10m + 5n.