\begin{align} \text{Per a calcular la massa del combustible si li sobra un 1,5%, hem de } :&\cssId{Step1}{m_{comb inicial} = n^o_{voltes}*c_{m}}\\[3px] &\cssId{Step2}{m_{comb inicial} = 66*c_{m}}\\[3px] &\cssId{Step3}{m_{comb final} = 66*c_{m}*(1+\frac{1,5}{100})}\\[3px] &\cssId{Step4}{m_{comb final} = 66*2,5*(1+\frac{1,5}{100})}\\[3px] &\cssId{Step5}{m_{comb final} = 167,5kg}\\[3px] \end{align}