Tính
a) -(-8) – 9 + 10 + (-14) + (+12)
b) -9 + 17 – 18 + 12 – 23
c) (-11) +(+5) – (-10) – (+8)
d) -3 + (+8) – (-11) + (-3)
đ) -(-15) – 17 + (-8) – (-12)
Tính
a) -(-8) – 9 + 10 + (-14) + (+12)
b) -9 + 17 – 18 + 12 – 23
c) (-11) +(+5) – (-10) – (+8)
d) -3 + (+8) – (-11) + (-3)
đ) -(-15) – 17 + (-8) – (-12)
$a)-(-8)-9+10+(-14)+(+12)$
$=8-9+10+(-14)+12$
$=(-1)+10+(-14)+12$
$=9+(-14)+12$
$=-5+12$
$=7$
$b)-9+17-18+12-23$
$=8-18+12-23$
$=-10+12-23$
$=2-23$
$=-21$
$c)(-11)+(+5)-(-10)-(+8)$
$=(-11)+5+10-8$
$=-6+10-8$
$=4-8$
$=-4$
$d)-3+(+8)-(-11)+(-3)$
$=-3+8+11+(-3)$
$=5+11+(-3)$
$=16+(-3)$
$=13$
$đ)-(-15)-17+(-8)-(-12)$
$=15-17+(-8)+12$
$=-2+(-8)+12$
$=-10+12$
$=2$
a, -(-8) – 9+10+(-14)+(+12)
= 8 – 9 + 10 + (-14) + (+12)
= (-1) + 10 + (-14) + (+12)
= 9 + (-14) + ( + 12)
= (-5) + 12
=7
b, -9 +17-18+12-23
= 8 – 18 + 12 – 23
= (-10) + 12 – 23
= 2 – 23
= -21
c, (-11)+(+5)-(-10)-(+8)
= (-6) – (-10) – (+8)
= 4 – 8
= -4
d , -3 + (+8) – (-11)+(-3)
= 5 – (-11)+(-3)
= -6 + -3
= -9
d , -(-15) – 17 + (-8) – (-12)
= 15 – 17 + (-8) – (-12)
= (-2) + (-8) – (-12)
= (-10) – (-12)
=2
@cho mk xin hay nhat nha