40k+70=30k+9

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Solution for 40k+70=30k+9 equation:


Simplifying
40k + 70 = 30k + 9

Reorder the terms:
70 + 40k = 30k + 9

Reorder the terms:
70 + 40k = 9 + 30k

Solving
70 + 40k = 9 + 30k

Solving for variable 'k'.

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

Add '-30k' to each side of the equation.
70 + 40k + -30k = 9 + 30k + -30k

Combine like terms: 40k + -30k = 10k
70 + 10k = 9 + 30k + -30k

Combine like terms: 30k + -30k = 0
70 + 10k = 9 + 0
70 + 10k = 9

Add '-70' to each side of the equation.
70 + -70 + 10k = 9 + -70

Combine like terms: 70 + -70 = 0
0 + 10k = 9 + -70
10k = 9 + -70

Combine like terms: 9 + -70 = -61
10k = -61

Divide each side by '10'.
k = -6.1

Simplifying
k = -6.1

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