Tìm số nguyên x, biết a) 8.x = 64 b) (-15).x = 60 c) 12.x+6 =30 d) (-11).x+9 = 130
Giải thích
a) x=64:8=8
b) x=60:−15=−4
c)
12x=30−612x=24 x=24:12 x=2
d)
−11.x=130−9−11.x=121 x=121:−11 x=−11
a) x=64:8=8
b) x=60:−15=−4
c)
12x=30−612x=24 x=24:12 x=2
d)
−11.x=130−9−11.x=121 x=121:−11 x=−11