Aflati media aritmetica a numerelor : x=1,2*3+3*9/5

x = 1,2 × 3 + 3 × 9 / 5

x = 3,6 + 27 / 5

x = ( 5 ×3,6 ) / 5 + 27 / 5

x = 18 / 5 + 27 / 5

x = 45 / 5

x = 9

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y = ( - 2 + 5 ) × 4 + 24 : ( - 8 ) - ( - 2 )³

y = 3 × 4 - 3 - ( - 8 )

y = 12 - 3 + 8

y = 9 + 8

y = 17

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Ma ( x; y ) = ( 9 + 17 ) / 2 = 26 / 2 = 13 → media aritmetica