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x+(x*0.3)+(x*0.4)+(x*0.15)=2.5
We move all terms to the left:
x+(x*0.3)+(x*0.4)+(x*0.15)-(2.5)=0
We add all the numbers together, and all the variables
x+(+x*0.3)+(+x*0.4)+(+x*0.15)-(2.5)=0
We add all the numbers together, and all the variables
x+(+x*0.3)+(+x*0.4)+(+x*0.15)-2.5=0
We get rid of parentheses
x+x*0.3+x*0.4+x*0.15-2.5=0
Wy multiply elements
x+0.3x+0.4x+0.15x-2.5=0
We add all the numbers together, and all the variables
1.85x-2.5=0
We move all terms containing x to the left, all other terms to the right
1.85x=2.5
x=2.5/1.85
x=1+0.65/1.85
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