40*2+b*2=50*2

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Solution for 40*2+b*2=50*2 equation: 



40*2+b*2=50*2

We move all terms to the left:

40*2+b*2-(50*2)=0

We add all the numbers together, and all the variables

b*2+40*2-100=0

We add all the numbers together, and all the variables

b*2-20=0

Wy multiply elements

2b-20=0

We move all terms containing b to the left, all other terms to the right

2b=20

b=20/2

b=10

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