Oblicz wartość liczbową wyrażenia :
a) (a+2)h dla a=7 i h= 1/3
b) -x+2y-3 dla x=-5 i y=-4
a) (7+2)x1/3=3
b)5+2x(-4)-3=5-8-3=-6
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a) (7+2)x1/3=3
b)5+2x(-4)-3=5-8-3=-6