take 1.3 x 2, then subtract 12.7, finally divide that by 7
£1.80 is the price per kilogram of the apples
Here, x represents the number of apples per kilogram and y represents the number of pears per kilogram.
As per the statement:
Julie buys 2kg of apples and 7kg of pears £12.70.
It is also given that the pears cost £1.30 per kilogram
Substitute in  we have;
Subtract 9.10 from both sides we have;
Divide both sides we have;
Therefore, £1.80 is the price per kilogram of the apples