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You need to be careful in how you write such questions as it is important to know if you mean: x - 12/2 = 18 or (x-12)/2 = 18 If x - 12/2 = 18 then x = 18 + 12/2 x = 18 + 6 x = 24 If (x-12)/2 = 18 then x - 12 = 18 * 2 x - 12 = 36 x = 36 + 12 x = 48
12 x 16 mm is a length of 192 mm which is approx 7.6 inches. 12 mm x 16 mm is measure of an area in 2 dimensional space and that cannot be converted to inches - which is a measure of length in 1 dimensional space.
x + 12 = 18 Therefore, x = 18 - 12 x = 6
1 inch = 25.4 mm 1 ft = 12 in = (12 x 25.4) mm 950 mm = [ 950 / (12 x 25.4) ] = 3.117 ft (rounded)
If you mean -x +x/3 = 12 then the value of x is -18 Check: --18 +(-18/3) = 12