10d+9=109

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Solution for 10d+9=109 equation:



10d+9=109
We move all terms to the left:
10d+9-(109)=0
We add all the numbers together, and all the variables
10d-100=0
We move all terms containing d to the left, all other terms to the right
10d=100
d=100/10
d=10

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