Re-arranging formula

Task goals

• Rearrange a one-step multiplicative formula, such as D = S x T, to make any one of the three variables the subject.
• Rearrange a one-step additive or subtractive formula, such as y = x + 5, to make the unknown the subject.
• Rearrange a one-step formula written as a fraction, such as S = D / T, to make the numerator the subject.
• Rearrange a two-step formula that combines multiplication with addition or subtraction, such as P = 2L + 2W, v = u + at, or y = mx + c, to make a given variable the subject.
• Rearrange a formula written as a single fraction with two terms in the numerator, such as A = (b + c) / 2, to make either variable the subject.
• Rearrange a formula containing a squared term or a square root, such as V = pi r^2 h, A = pi r^2, or c^2 = a^2 + b^2, to make a given variable the subject.
• Rearrange a formula containing brackets, such as y = 2(x + 3) - 5, to make x the subject.
• Rearrange a real-world formula (for perimeter, hire cost, or temperature conversion) to make a given variable the subject, then substitute given values to find its numerical value.