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-0.5(3a+4)+1.9a-1a=1/4
We move all terms to the left:
-0.5(3a+4)+1.9a-1a-(1/4)=0
We add all the numbers together, and all the variables
-0.5(3a+4)+1.9a-1a-(+1/4)=0
We add all the numbers together, and all the variables
0.9a-0.5(3a+4)-(+1/4)=0
We multiply parentheses
0.9a-1.5a-2-(+1/4)=0
We get rid of parentheses
0.9a-1.5a-2-1/4=0
We multiply all the terms by the denominator
(0.9a)*4-(1.5a)*4-1-2*4=0
We add all the numbers together, and all the variables
(+0.9a)*4-(+1.5a)*4-1-2*4=0
We add all the numbers together, and all the variables
(+0.9a)*4-(+1.5a)*4-9=0
We multiply parentheses
0a-4a-9=0
We add all the numbers together, and all the variables
-3a-9=0
We move all terms containing a to the left, all other terms to the right
-3a=9
a=9/-3
a=-3
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