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R = Q7+ C, Make Q as the subject of the formula
Solution: R =Q7 + C ( Take 'C' to the other side)= R-C = Q7 ( multiply both sides by 7, to eliminate 7 from denominator)⇒7 x (R -C) = 7 X Q7 ( Cancel the 7 from Nr. and Dr. on right hand side)
⇒7(R-C) = Q.