Solve a+18=5a-3+a

$$a + 18 = 5 a - 3 + a$$

Solve for a

$$a = \frac{21}{5} = 4\frac{1}{5} = 4.2$$

Steps for Solving Linear Equation

Combine 5a and a to get 6a.

$$a+18=6a-3$$

Subtract 6a from both sides.

$$a+18-6a=-3$$

Combine a and -6a to get -5a.

$$-5a+18=-3$$

Subtract 18 from both sides.

$$-5a=-3-18$$

Subtract 18 from -3 to get -21.

$$-5a=-21$$

Divide both sides by -5.

$$a=\frac{-21}{-5}$$

Fraction \frac{-21}{-5} can be simplified to \frac{21}{5} by removing the negative sign from both the numerator and the denominator.

$$a=\frac{21}{5}$$