3t-7=5t-21

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Solution for 3t-7=5t-21 equation:


Simplifying
3t + -7 = 5t + -21

Reorder the terms:
-7 + 3t = 5t + -21

Reorder the terms:
-7 + 3t = -21 + 5t

Solving
-7 + 3t = -21 + 5t

Solving for variable 't'.

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

Add '-5t' to each side of the equation.
-7 + 3t + -5t = -21 + 5t + -5t

Combine like terms: 3t + -5t = -2t
-7 + -2t = -21 + 5t + -5t

Combine like terms: 5t + -5t = 0
-7 + -2t = -21 + 0
-7 + -2t = -21

Add '7' to each side of the equation.
-7 + 7 + -2t = -21 + 7

Combine like terms: -7 + 7 = 0
0 + -2t = -21 + 7
-2t = -21 + 7

Combine like terms: -21 + 7 = -14
-2t = -14

Divide each side by '-2'.
t = 7

Simplifying
t = 7

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