0.4x+0.3x=7

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Solution for 0.4x+0.3x=7 equation: 



0.4x+0.3x=7

We move all terms to the left:

0.4x+0.3x-(7)=0

We add all the numbers together, and all the variables

0.7x-7=0

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

0.7x=7

x=7/0.7

x=10

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