8x^2-55x=-42

Solution for 8x^2-55x=-42 equation:

Simplifying
8x2 + -55x = -42

Reorder the terms:
-55x + 8x2 = -42

Solving
-55x + 8x2 = -42

Solving for variable 'x'.

Reorder the terms:
42 + -55x + 8x2 = -42 + 42

Combine like terms: -42 + 42 = 0
42 + -55x + 8x2 = 0

Factor a trinomial.
(7 + -8x)(6 + -1x) = 0

Subproblem 1
Set the factor '(7 + -8x)' equal to zero and attempt to solve:

Simplifying
7 + -8x = 0

Solving
7 + -8x = 0

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

Add '-7' to each side of the equation.
7 + -7 + -8x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -8x = 0 + -7
-8x = 0 + -7

Combine like terms: 0 + -7 = -7
-8x = -7

Divide each side by '-8'.
x = 0.875

Simplifying
x = 0.875
Subproblem 2
Set the factor '(6 + -1x)' equal to zero and attempt to solve:

Simplifying
6 + -1x = 0

Solving
6 + -1x = 0

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

Add '-6' to each side of the equation.
6 + -6 + -1x = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -1x = 0 + -6
-1x = 0 + -6

Combine like terms: 0 + -6 = -6
-1x = -6

Divide each side by '-1'.
x = 6

Simplifying
x = 6
Solution
x = {0.875, 6}