98=-7(7-3r)

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Solution for 98=-7(7-3r) equation:


Simplifying
98 = -7(7 + -3r)
98 = (7 * -7 + -3r * -7)
98 = (-49 + 21r)

Solving
98 = -49 + 21r

Solving for variable 'r'.

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

Add '-21r' to each side of the equation.
98 + -21r = -49 + 21r + -21r

Combine like terms: 21r + -21r = 0
98 + -21r = -49 + 0
98 + -21r = -49

Add '-98' to each side of the equation.
98 + -98 + -21r = -49 + -98

Combine like terms: 98 + -98 = 0
0 + -21r = -49 + -98
-21r = -49 + -98

Combine like terms: -49 + -98 = -147
-21r = -147

Divide each side by '-21'.
r = 7

Simplifying
r = 7

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