To solve the equation, we'll first isolate the variable.
Adding 4.6 to both sides gives us:
0.4s - 4.6 + 4.6 = -1.8 + 4.6
0.4s = 2.8
To isolate the variable s, we can divide both sides by 0.4:
(0.4s)/0.4 = 2.8/0.4
s = 7
0.4s-4.6=-1.8
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