How can you make x the subject of the formula xy + 3 = xm?
There is more than one x term in the formula, so rearrange it by isolating all x terms on one side.
Subtract xy from each side to give 3 = xm - xy. Factorise for x, giving 3 = x(m - y).
Divide by the bracket to isolate x, and x=3/(m−y)
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