4(2t+5)-21=6t-15

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Solution for 4(2t+5)-21=6t-15 equation:


Simplifying
4(2t + 5) + -21 = 6t + -15

Reorder the terms:
4(5 + 2t) + -21 = 6t + -15
(5 * 4 + 2t * 4) + -21 = 6t + -15
(20 + 8t) + -21 = 6t + -15

Reorder the terms:
20 + -21 + 8t = 6t + -15

Combine like terms: 20 + -21 = -1
-1 + 8t = 6t + -15

Reorder the terms:
-1 + 8t = -15 + 6t

Solving
-1 + 8t = -15 + 6t

Solving for variable 't'.

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

Add '-6t' to each side of the equation.
-1 + 8t + -6t = -15 + 6t + -6t

Combine like terms: 8t + -6t = 2t
-1 + 2t = -15 + 6t + -6t

Combine like terms: 6t + -6t = 0
-1 + 2t = -15 + 0
-1 + 2t = -15

Add '1' to each side of the equation.
-1 + 1 + 2t = -15 + 1

Combine like terms: -1 + 1 = 0
0 + 2t = -15 + 1
2t = -15 + 1

Combine like terms: -15 + 1 = -14
2t = -14

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

Simplifying
t = -7

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