Solve 1.4*10^-19=n*1.6*10^-19

$$1.4 \times 10 ^ { - 19 } = n \times 1.6 \times 10 ^ { - 19 }$$

Solve for n

$$n=0.875$$

Steps for Solving Linear Equation

Calculate 10 to the power of -19 and get \frac{1}{10000000000000000000}.

$$1.4\times \frac{1}{10000000000000000000}=n\times 1.6\times 10^{-19}$$

Multiply 1.4 and \frac{1}{10000000000000000000} to get \frac{7}{50000000000000000000}.

$$\frac{7}{50000000000000000000}=n\times 1.6\times 10^{-19}$$

Calculate 10 to the power of -19 and get \frac{1}{10000000000000000000}.

$$\frac{7}{50000000000000000000}=n\times 1.6\times \frac{1}{10000000000000000000}$$

Multiply 1.6 and \frac{1}{10000000000000000000} to get \frac{1}{6250000000000000000}.

$$\frac{7}{50000000000000000000}=n\times \frac{1}{6250000000000000000}$$

Swap sides so that all variable terms are on the left hand side.

$$n\times \frac{1}{6250000000000000000}=\frac{7}{50000000000000000000}$$

Multiply both sides by 6250000000000000000, the reciprocal of \frac{1}{6250000000000000000}.

$$n=\frac{7}{50000000000000000000}\times 6250000000000000000$$

Multiply \frac{7}{50000000000000000000} and 6250000000000000000 to get \frac{7}{8}.

$$n=\frac{7}{8}$$