7(t-2)+9(-3t-6)=-21(t+4)+7

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Solution for 7(t-2)+9(-3t-6)=-21(t+4)+7 equation:


Simplifying
7(t + -2) + 9(-3t + -6) = -21(t + 4) + 7

Reorder the terms:
7(-2 + t) + 9(-3t + -6) = -21(t + 4) + 7
(-2 * 7 + t * 7) + 9(-3t + -6) = -21(t + 4) + 7
(-14 + 7t) + 9(-3t + -6) = -21(t + 4) + 7

Reorder the terms:
-14 + 7t + 9(-6 + -3t) = -21(t + 4) + 7
-14 + 7t + (-6 * 9 + -3t * 9) = -21(t + 4) + 7
-14 + 7t + (-54 + -27t) = -21(t + 4) + 7

Reorder the terms:
-14 + -54 + 7t + -27t = -21(t + 4) + 7

Combine like terms: -14 + -54 = -68
-68 + 7t + -27t = -21(t + 4) + 7

Combine like terms: 7t + -27t = -20t
-68 + -20t = -21(t + 4) + 7

Reorder the terms:
-68 + -20t = -21(4 + t) + 7
-68 + -20t = (4 * -21 + t * -21) + 7
-68 + -20t = (-84 + -21t) + 7

Reorder the terms:
-68 + -20t = -84 + 7 + -21t

Combine like terms: -84 + 7 = -77
-68 + -20t = -77 + -21t

Solving
-68 + -20t = -77 + -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.
-68 + -20t + 21t = -77 + -21t + 21t

Combine like terms: -20t + 21t = 1t
-68 + 1t = -77 + -21t + 21t

Combine like terms: -21t + 21t = 0
-68 + 1t = -77 + 0
-68 + 1t = -77

Add '68' to each side of the equation.
-68 + 68 + 1t = -77 + 68

Combine like terms: -68 + 68 = 0
0 + 1t = -77 + 68
1t = -77 + 68

Combine like terms: -77 + 68 = -9
1t = -9

Divide each side by '1'.
t = -9

Simplifying
t = -9

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