0.9(x+1.4)−2.3+0.1x=1.6

Im just confused and i do not understand it at all.

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1 Answer

Expand brackets: 0.9x+0.9*1.4-2.3+0.1x=1.6

x+1.26-2.3=1.6 (because 0.9x+0.1x=x)

x=1.6+2.3-1.26=3.9-1.26=2.64, so x=2.64.

CHECK

0.9(2.64+1.4)-2.3+0.264=0.9*4.04-2.3+0.264=3.636-2.036=1.6 OK
by Top Rated User (1.1m points)

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