Tính.
a,7-46+35-19 b,80-(12-46+37) c,-72-(38+38)+72
d,-(32+47)-96+128+47 e,-7+5-9+10+40
f,-620+(-50-91)+600.
Tính.
a,7-46+35-19 b,80-(12-46+37) c,-72-(38+38)+72
d,-(32+47)-96+128+47 e,-7+5-9+10+40
f,-620+(-50-91)+600.
a, 7-46+35-19
= -39+16
= -23
b, 80-( 12-46+37)
= 80-3
= 77
c, -72-( 38+38)+72
= -( 38+38)
= -76
d, -( 32+47)-96+128+47
= -32-47-96+128+47
= -32-96+128
= 0
e, -7+5-9+10+40
= -11+10+40
= 39
f, -620+( -50-91)+600
= -620-141+600
= -161
Đáp án:
Giải thích các bước giải:
$a, 7-46+35-19$
$= -39+16$
$= -23$
$b, 80-( 12-46+37)$
$= 80-3$
$= 77$
$c, -72-( 38+38)+72$
$= -( 38+38)$
$= -76$
$d, -( 32+47)-96+128+47$
$= -32-47-96+128+47$
$= -32-96+128$
$= 0$
$e, -7+5-9+10+40$
$= -11+10+40$
$= 39$
$f, -620+( -50-91)+600$
$= -620-141+600$
$= -161$