49=21+4k

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Solution for 49=21+4k equation:


Simplifying
49 = 21 + 4k

Solving
49 = 21 + 4k

Solving for variable 'k'.

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

Add '-4k' to each side of the equation.
49 + -4k = 21 + 4k + -4k

Combine like terms: 4k + -4k = 0
49 + -4k = 21 + 0
49 + -4k = 21

Add '-49' to each side of the equation.
49 + -49 + -4k = 21 + -49

Combine like terms: 49 + -49 = 0
0 + -4k = 21 + -49
-4k = 21 + -49

Combine like terms: 21 + -49 = -28
-4k = -28

Divide each side by '-4'.
k = 7

Simplifying
k = 7

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