3+9=7t-9

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Solution for 3+9=7t-9 equation:


Simplifying
3 + 9 = 7t + -9

Combine like terms: 3 + 9 = 12
12 = 7t + -9

Reorder the terms:
12 = -9 + 7t

Solving
12 = -9 + 7t

Solving for variable 't'.

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

Add '-7t' to each side of the equation.
12 + -7t = -9 + 7t + -7t

Combine like terms: 7t + -7t = 0
12 + -7t = -9 + 0
12 + -7t = -9

Add '-12' to each side of the equation.
12 + -12 + -7t = -9 + -12

Combine like terms: 12 + -12 = 0
0 + -7t = -9 + -12
-7t = -9 + -12

Combine like terms: -9 + -12 = -21
-7t = -21

Divide each side by '-7'.
t = 3

Simplifying
t = 3

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