4*5=a+3

Solution for 4*5=a+3 equation:

Simplifying
4 * 5 = a + 3

Multiply 4 * 5
20 = a + 3

Reorder the terms:
20 = 3 + a

Solving
20 = 3 + a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-1a' to each side of the equation.
20 + -1a = 3 + a + -1a

Combine like terms: a + -1a = 0
20 + -1a = 3 + 0
20 + -1a = 3

Add '-20' to each side of the equation.
20 + -20 + -1a = 3 + -20

Combine like terms: 20 + -20 = 0
0 + -1a = 3 + -20
-1a = 3 + -20

Combine like terms: 3 + -20 = -17
-1a = -17

Divide each side by '-1'.
a = 17

Simplifying
a = 17