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76-4×9+a×(6-4)=60 afla necunoscuta


Răspuns :

76 - 4 x 9 + a x (6 - 4) = 60
76 - 36 + a x 2 = 60
40 + a x 2 = 60
a x 2 = 60 - 40
a x 2 = 20
a = 20 : 2
a = 10
76-4×9+a×(6-4)=60
76-4*9+a*2=60
76-36+2a=60
40+2a=60
2a =60-40
2a=20
a=20/2
a=10