7(t-0.5)+21t=0

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Solution for 7(t-0.5)+21t=0 equation:


Simplifying
7(t + -0.5) + 21t = 0

Reorder the terms:
7(-0.5 + t) + 21t = 0
(-0.5 * 7 + t * 7) + 21t = 0
(-3.5 + 7t) + 21t = 0

Combine like terms: 7t + 21t = 28t
-3.5 + 28t = 0

Solving
-3.5 + 28t = 0

Solving for variable 't'.

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

Add '3.5' to each side of the equation.
-3.5 + 3.5 + 28t = 0 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + 28t = 0 + 3.5
28t = 0 + 3.5

Combine like terms: 0 + 3.5 = 3.5
28t = 3.5

Divide each side by '28'.
t = 0.125

Simplifying
t = 0.125

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