Solve for x
x=6.3
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5.4\times 2=4.5+x
Multiply both sides by 2.
10.8=4.5+x
Multiply 5.4 and 2 to get 10.8.
4.5+x=10.8
Swap sides so that all variable terms are on the left hand side.
x=10.8-4.5
Subtract 4.5 from both sides.
x=6.3
Subtract 4.5 from 10.8 to get 6.3.
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