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Solution 2.2:1c

From Förberedande kurs i matematik 1

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Because there is an x on both the left- and right-hand sides, the first step is to subtract x/3 from both sides,

31x131x=x31x

so as to collect x on the right-hand side

1=32x.

Then, multiply both sides by 3/2,

23(1)=2332x

so that 2/3 can be eliminated on the right-hand side to give us

23=x.