1.30*3.5=x

Solution for 1.30*3.5=x equation:

Simplifying
1.30 * 3.5 = x

Multiply 1.30 * 3.5
4.55 = x

Solving
4.55 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
4.55 + -1x = x + -1x

Combine like terms: x + -1x = 0
4.55 + -1x = 0

Add '-4.55' to each side of the equation.
4.55 + -4.55 + -1x = 0 + -4.55

Combine like terms: 4.55 + -4.55 = 0.00
0.00 + -1x = 0 + -4.55
-1x = 0 + -4.55

Combine like terms: 0 + -4.55 = -4.55
-1x = -4.55

Divide each side by '-1'.
x = 4.55

Simplifying
x = 4.55