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x(.03)+x(.04)=440
We move all terms to the left:
x(.03)+x(.04)-(440)=0
We add all the numbers together, and all the variables
x(0.03)+x(0.04)-440=0
We multiply parentheses
0.03x+0.04x-440=0
We add all the numbers together, and all the variables
0.07x-440=0
We move all terms containing x to the left, all other terms to the right
0.07x=440
x=440/0.07
x=6285+0.049999999999955/0.07
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