74*0.3+x*0.7=100

Solution for 74*0.3+x*0.7=100 equation:

Simplifying
74 * 0.3 + x * 0.7 = 100

Multiply 74 * 0.3
22.2 + x * 0.7 = 100

Reorder the terms for easier multiplication:
22.2 + 0.7x = 100

Solving
22.2 + 0.7x = 100

Solving for variable 'x'.

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

Add '-22.2' to each side of the equation.
22.2 + -22.2 + 0.7x = 100 + -22.2

Combine like terms: 22.2 + -22.2 = 0.0
0.0 + 0.7x = 100 + -22.2
0.7x = 100 + -22.2

Combine like terms: 100 + -22.2 = 77.8
0.7x = 77.8

Divide each side by '0.7'.
x = 111.1428571

Simplifying
x = 111.1428571