12345678*87654321=a

Solution for 12345678*87654321=a equation:

Simplifying
12345678 * 87654321 = a

Multiply 12345678 * 87654321
1082152022000000 = a

Solving
1082152022000000 = 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.
1082152022000000 + -1a = a + -1a

Combine like terms: a + -1a = 0
1082152022000000 + -1a = 0

Add '-1082152022000000' to each side of the equation.
1082152022000000 + -1082152022000000 + -1a = 0 + -1082152022000000

Combine like terms: 1082152022000000 + -1082152022000000 = 0
0 + -1a = 0 + -1082152022000000
-1a = 0 + -1082152022000000

Combine like terms: 0 + -1082152022000000 = -1082152022000000
-1a = -1082152022000000

Divide each side by '-1'.
a = 1082152022000000

Simplifying
a = 1082152022000000