-3[7+r]-10=-19

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Solution for -3[7+r]-10=-19 equation:


Simplifying
-3[7 + r] + -10 = -19
[7 * -3 + r * -3] + -10 = -19
[-21 + -3r] + -10 = -19

Reorder the terms:
-21 + -10 + -3r = -19

Combine like terms: -21 + -10 = -31
-31 + -3r = -19

Solving
-31 + -3r = -19

Solving for variable 'r'.

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

Add '31' to each side of the equation.
-31 + 31 + -3r = -19 + 31

Combine like terms: -31 + 31 = 0
0 + -3r = -19 + 31
-3r = -19 + 31

Combine like terms: -19 + 31 = 12
-3r = 12

Divide each side by '-3'.
r = -4

Simplifying
r = -4

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