-2(t+4)+6(6-3t)=-21(t-1)+4

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Solution for -2(t+4)+6(6-3t)=-21(t-1)+4 equation:


Simplifying
-2(t + 4) + 6(6 + -3t) = -21(t + -1) + 4

Reorder the terms:
-2(4 + t) + 6(6 + -3t) = -21(t + -1) + 4
(4 * -2 + t * -2) + 6(6 + -3t) = -21(t + -1) + 4
(-8 + -2t) + 6(6 + -3t) = -21(t + -1) + 4
-8 + -2t + (6 * 6 + -3t * 6) = -21(t + -1) + 4
-8 + -2t + (36 + -18t) = -21(t + -1) + 4

Reorder the terms:
-8 + 36 + -2t + -18t = -21(t + -1) + 4

Combine like terms: -8 + 36 = 28
28 + -2t + -18t = -21(t + -1) + 4

Combine like terms: -2t + -18t = -20t
28 + -20t = -21(t + -1) + 4

Reorder the terms:
28 + -20t = -21(-1 + t) + 4
28 + -20t = (-1 * -21 + t * -21) + 4
28 + -20t = (21 + -21t) + 4

Reorder the terms:
28 + -20t = 21 + 4 + -21t

Combine like terms: 21 + 4 = 25
28 + -20t = 25 + -21t

Solving
28 + -20t = 25 + -21t

Solving for variable 't'.

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

Add '21t' to each side of the equation.
28 + -20t + 21t = 25 + -21t + 21t

Combine like terms: -20t + 21t = 1t
28 + 1t = 25 + -21t + 21t

Combine like terms: -21t + 21t = 0
28 + 1t = 25 + 0
28 + 1t = 25

Add '-28' to each side of the equation.
28 + -28 + 1t = 25 + -28

Combine like terms: 28 + -28 = 0
0 + 1t = 25 + -28
1t = 25 + -28

Combine like terms: 25 + -28 = -3
1t = -3

Divide each side by '1'.
t = -3

Simplifying
t = -3

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