(7t-21)+(-a-5)=-16

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Solution for (7t-21)+(-a-5)=-16 equation:


Simplifying
(7t + -21) + (-1a + -5) = -16

Reorder the terms:
(-21 + 7t) + (-1a + -5) = -16

Remove parenthesis around (-21 + 7t)
-21 + 7t + (-1a + -5) = -16

Reorder the terms:
-21 + 7t + (-5 + -1a) = -16

Remove parenthesis around (-5 + -1a)
-21 + 7t + -5 + -1a = -16

Reorder the terms:
-21 + -5 + -1a + 7t = -16

Combine like terms: -21 + -5 = -26
-26 + -1a + 7t = -16

Solving
-26 + -1a + 7t = -16

Solving for variable 'a'.

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

Add '26' to each side of the equation.
-26 + -1a + 26 + 7t = -16 + 26

Reorder the terms:
-26 + 26 + -1a + 7t = -16 + 26

Combine like terms: -26 + 26 = 0
0 + -1a + 7t = -16 + 26
-1a + 7t = -16 + 26

Combine like terms: -16 + 26 = 10
-1a + 7t = 10

Add '-7t' to each side of the equation.
-1a + 7t + -7t = 10 + -7t

Combine like terms: 7t + -7t = 0
-1a + 0 = 10 + -7t
-1a = 10 + -7t

Divide each side by '-1'.
a = -10 + 7t

Simplifying
a = -10 + 7t

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