21(A-19)=189

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Solution for 21(A-19)=189 equation:


Simplifying
21(A + -19) = 189

Reorder the terms:
21(-19 + A) = 189
(-19 * 21 + A * 21) = 189
(-399 + 21A) = 189

Solving
-399 + 21A = 189

Solving for variable 'A'.

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

Add '399' to each side of the equation.
-399 + 399 + 21A = 189 + 399

Combine like terms: -399 + 399 = 0
0 + 21A = 189 + 399
21A = 189 + 399

Combine like terms: 189 + 399 = 588
21A = 588

Divide each side by '21'.
A = 28

Simplifying
A = 28

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