Solve +7.2=-+x*10^-19

$$+7.2=-+x \times { 10 }^{ -19 }$$

Solve for x

$$x=-72000000000000000000$$

Steps for Solving Linear Equation

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

$$7.2=\left(-x\right)\times \frac{1}{10000000000000000000}$$

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

$$\left(-x\right)\times \frac{1}{10000000000000000000}=7.2$$

Multiply both sides by 10000000000000000000, the reciprocal of \frac{1}{10000000000000000000}.

$$-x=7.2\times 10000000000000000000$$

Multiply 7.2 and 10000000000000000000 to get 72000000000000000000.

$$-x=72000000000000000000$$

Multiply both sides by -1.

$$x=-72000000000000000000$$