(3.0)(4.2)=(9.1)X

Solution for (3.0)(4.2)=(9.1)X equation:

Simplifying
(3.0)(4.2) = (9.1) * X

Multiply 3.0 * 4.2
12.6 = (9.1) * X

Solving
12.6 = 9.1X

Solving for variable 'X'.

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

Add '-9.1X' to each side of the equation.
12.6 + -9.1X = 9.1X + -9.1X

Combine like terms: 9.1X + -9.1X = 0.0
12.6 + -9.1X = 0.0

Add '-12.6' to each side of the equation.
12.6 + -12.6 + -9.1X = 0.0 + -12.6

Combine like terms: 12.6 + -12.6 = 0.0
0.0 + -9.1X = 0.0 + -12.6
-9.1X = 0.0 + -12.6

Combine like terms: 0.0 + -12.6 = -12.6
-9.1X = -12.6

Divide each side by '-9.1'.
X = 1.384615385

Simplifying
X = 1.384615385