212=4(-7a-3)

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Solution for 212=4(-7a-3) equation:


Simplifying
212 = 4(-7a + -3)

Reorder the terms:
212 = 4(-3 + -7a)
212 = (-3 * 4 + -7a * 4)
212 = (-12 + -28a)

Solving
212 = -12 + -28a

Solving for variable 'a'.

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

Add '28a' to each side of the equation.
212 + 28a = -12 + -28a + 28a

Combine like terms: -28a + 28a = 0
212 + 28a = -12 + 0
212 + 28a = -12

Add '-212' to each side of the equation.
212 + -212 + 28a = -12 + -212

Combine like terms: 212 + -212 = 0
0 + 28a = -12 + -212
28a = -12 + -212

Combine like terms: -12 + -212 = -224
28a = -224

Divide each side by '28'.
a = -8

Simplifying
a = -8

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