a) -3/7 . 2/19 + -3/7 . 17/19 - 4/7
b) 4/5 . 3/5 . ( -2/3 + 3)
c) 4/3 . (1/2 + 7/4)+ 7/4
d) (-3/4 + 5/2) + 5/2
g) -2/9 . 5/2 - -1/6 ÷ 3/7 + 17/8
h) -5/14 + -9/14 . [(-2/3)³ ÷ (-1/3)²]
Bài 2
a) 5/6 + x = -1/8
b) x - -5/3 = -7/5
c) -1/2 - ( x + 3/4) = -5/4
d) -3/5x + -7/4 = 3/10
Loga
Sinh Học lớp 12
