r+(4.21)=-19

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Solution for r+(4.21)=-19 equation: 


Simplifying
r + (4.21) = -19
r + 4.21 = -19

Reorder the terms:
4.21 + r = -19

Solving
4.21 + r = -19

Solving for variable 'r'.

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

Add '-4.21' to each side of the equation.
4.21 + -4.21 + r = -19 + -4.21

Combine like terms: 4.21 + -4.21 = 0.00
0.00 + r = -19 + -4.21
r = -19 + -4.21

Combine like terms: -19 + -4.21 = -23.21
r = -23.21

Simplifying
r = -23.21

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