Calculate the value of an apple and an orange from the following 2 purchases:

applecatcur orangecatcur

Do you want to collect and read all results on this computer?

This is about mental arithmetic, with a pre-algebra tool introducing the Gaussian elimination

Adding apples oranges and pears (3*3) - Adding apples oranges pears and lemons (4*4)

Sumant peres i pomes (català) - Sumando peras y manzanas (castellano)

Apples and oranges First decimal (for Android). Gauss Jordan, graphic solution, Cramer's rule, inverse matrix.... (paid app at Google Play: 1€):

Apples and oranges first decimal per Android

Adding apples and oranges on Google PlayQR code to Adding Apples and Oranges