3x*7+7*5=12

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Solution for 3x*7+7*5=12 equation:


Simplifying
3x * 7 + 7 * 5 = 12

Reorder the terms for easier multiplication:
3 * 7x + 7 * 5 = 12

Multiply 3 * 7
21x + 7 * 5 = 12

Multiply 7 * 5
21x + 35 = 12

Reorder the terms:
35 + 21x = 12

Solving
35 + 21x = 12

Solving for variable 'x'.

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

Add '-35' to each side of the equation.
35 + -35 + 21x = 12 + -35

Combine like terms: 35 + -35 = 0
0 + 21x = 12 + -35
21x = 12 + -35

Combine like terms: 12 + -35 = -23
21x = -23

Divide each side by '21'.
x = -1.095238095

Simplifying
x = -1.095238095

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