(6*7)+(y*3)=55

Solution for (6*7)+(y*3)=55 equation:

Simplifying
(6 * 7) + (y * 3) = 55

Multiply 6 * 7
(42) + (y * 3) = 55
42 + (y * 3) = 55

Reorder the terms for easier multiplication:
42 + (3y) = 55

Solving
42 + (3y) = 55

Solving for variable 'y'.

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

Add '-42' to each side of the equation.
42 + -42 + (3y) = 55 + -42

Combine like terms: 42 + -42 = 0
0 + (3y) = 55 + -42
(3y) = 55 + -42

Combine like terms: 55 + -42 = 13
(3y) = 13

Divide each side by '3'.
y = 4.333333333

Simplifying
y = 4.333333333