Sagot :
B= (-3/4 + 2/3) x 5/8
= (-3/4 x3 + 2/3 x 4) x 5/8
= (-9/12 + 8/12) x 5/8
= -1/12 x 5/8
= -5/96
= (-3/4 x3 + 2/3 x 4) x 5/8
= (-9/12 + 8/12) x 5/8
= -1/12 x 5/8
= -5/96