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6.7=7.5-0.4x
We simplify the equation to the form, which is simple to understand
6.7=7.5-0.4x
We move all terms containing x to the left and all other terms to the right.
+ 0.4x=+7.5-6.7
We simplify left and right side of the equation.
+ 0.4x=0.8
We divide both sides of the equation by 00.4 to get x.
x=2
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