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0.4(5+2x)-1/2=0.9x+2.1
We move all terms to the left:
0.4(5+2x)-1/2-(0.9x+2.1)=0
We add all the numbers together, and all the variables
0.4(2x+5)-(0.9x+2.1)-1/2=0
We multiply parentheses
0.8x-(0.9x+2.1)+2-1/2=0
We get rid of parentheses
0.8x-0.9x-2.1+2-1/2=0
We multiply all the terms by the denominator
(0.8x)*2-(0.9x)*2-1-(2.1)*2+2*2=0
We add all the numbers together, and all the variables
(+0.8x)*2-(+0.9x)*2-1-(2.1)*2+2*2=0
We add all the numbers together, and all the variables
(+0.8x)*2-(+0.9x)*2-1.2=0
We multiply parentheses
0x-0x-1.2=0
We add all the numbers together, and all the variables
-1.2!=0
There is no solution for this equation
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