Question

Make m the subject of the if r=m+1/m-1

Answer 1

To change the subject of a formula, begin with the variable to become the new subject, and apply inverse operation as for solving equations in the opposite order to the order conventions.

1. To make ‘u’ the subject of the formula in v = u + at,

v - at = u + a̶t̶ - a̶t̶ [subtract at from both sides]

v - at = u

or, u = v - at

2. To make ‘t’ the subject of the formula, v = u + at,

v - u = u̶ + at - u̶ [subtract u from both sides]

v - u = at

On dividing both sides by a we get;

(v - u)/a = a̶t/a̶

or, (v - u )/a = t

or, t = (v - u)/a

Hope it helps you.

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