a) (93-13) -55= 25
b) 126 x ( 8 + 2)
= 126 x 10 = 1260
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duyệt
a ) 93 - 55 - 13 = 93 - 13 - 55 = 80 - 55 = 25
b ) 126 x 8 + 2 x 126 = 126 x ( 8 + 2 ) = 126 x 10 = 1260
cau 1 = 25 nha ban
cau 2 = 1260 nha ban
93 - 55 - 13 = ( 93 - 13 ) - 55 = 80 - 55 = 25
126 x 8 + 2 x 126 = 126 x ( 8 + 2 ) = 126 x 10 = 1260
93 - 55 -13=(93-13)-55=80-55=25
126x8+2x126=126x(8+2)=126x10=1260
