for pysics
7.8e^10-8 x 1.4 / 7.8e^10-7
Sorry i've done it now,
I was looking at the wrong equation. :p
Thanks for the help though! :)
$$\frac{7.8e^{10}-8 \times 1.4 }{ 7.8e^{10}-7}=\frac{7.8e^{10}-11.2 }{ 7.8e^{10}-7}$$
Is this the question that you intended??