A household uses 792 units of gas over 90 days. The gas company uses this formula to convert the units used into kilowatt hours (kWh).
Number of kilowatt hours = Units used x 11.2
Each kWh is charged at 2p
There is also a fixed charge of 25p per day.
Complete the information in the table.
Number of gas units used
792
Number of kilowatt hours
Number of kilowatt hours x 2p (in Pounds)
Fixed charge 90 x 25p (in Pounds).
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What can each term of the equation be multiplied by to eliminate the fractions before solving? x – + 2x = + x 2 6 10 12

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