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-1.28(4000) + 0.7x=0.0004(4000)+x
We simplify the equation to the form, which is simple to understand
-1.28(4000) + 0.7x=0.0004(4000)+x
Reorder the terms in parentheses
+(-5120) + 0.7x=0.0004*(4000)+x
Remove unnecessary parentheses
-5120 + 0.7x=0.0004+*(+4000+)+x
Reorder the terms in parentheses
-5120 + 0.7x=+(+1.6)+x
Remove unnecessary parentheses
-5120 + 0.7x=+1.6+x
We move all terms containing x to the left and all other terms to the right.
+ 0.7x-1x=+1.6+5120
We simplify left and right side of the equation.
-0.3x=+5121.6
We divide both sides of the equation by -0.3 to get x.
x=-17072
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