40.32=2.1(406.2-x)
40.32 = 851.82 - 2.1x
-811.5 = -2.1x
x ≈ 386.43
40,32 : (406,2-x) = 2,1 x ≈ 386.43.
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Verified answer
40.32=2.1(406.2-x)
40.32 = 851.82 - 2.1x
-811.5 = -2.1x
x ≈ 386.43
40,32 : (406,2-x) = 2,1 x ≈ 386.43.