a,\(\left[\left(-32.47\right)+68,12\right]+32,47\)
\(=68,12+32,47-32,47=68,12\)
b,\(\left[\left(-61,8\right)+\left(-123,6\right)\right]+\left(83,6+61,8\right)\)
=\(83,6-123,6+61,8-61,8=-40\)
a,\left[\left(-32.47\right)+68,12\right]+32,47[(−32.47)+68,12]+32,47
=68,12+32,47-32,47=68,12=68,12+32,47−32,47=68,12
b,\left[\left(-61,8\right)+\left(-123,6\right)\right]+\left(83,6+61,8\right)[(−61,8)+(−123,6)]+(83,6+61,8)
=83,6-123,6+61,8-61,8=-4083,6−123,6+61,8−61,8=−40
a) [(-32.47) + 68,12] + 32,47
= 68,12+32,47−32,47
=68,12
b) [( -61,8 ) + ( -123,6 )] + ( 83,6 + 61,8 )
=83,6 - 123,6 + 61,8 - 61,8
=-4083,6 - 123,6 + 61,8 - 61,8
= -40
Còn câu C mik không nghĩ ra
a,
=(-32,47) +68,12+32,47
= (-32,47+32,47)+68,47
=68,47
a) [(-32.47) + 68,12] + 32,47
= 68,12+32,47−32,47
=68,12
b) [( -61,8 ) + ( -123,6 )] + ( 83,6 + 61,8 )
=83,6 - 123,6 + 61,8 - 61,8
=-4083,6 - 123,6 + 61,8 - 61,8
= -40
a) [(-32.47) + 68,12] + 32,47
= 68,12+32,47−32,47
=68,12
b) [( -61,8 ) + ( -123,6 )] + ( 83,6 + 61,8 )
=83,6 - 123,6 + 61,8 - 61,8
=-4083,6 - 123,6 + 61,8 - 61,8
= -40
a,[(−32.47)+68,12]+32,47[(−32.47)+68,12]+32,47
=68,12+32,47−32,47=68,12=68,12+32,47−32,47=68,12
b,[(−61,8)+(−123,6)]+(83,6+61,8)[(−61,8)+(−123,6)]+(83,6+61,8)
=83,6−123,6+61,8−61,8=−40
a,[(−32.47)+68,12]+32,47[(−32.47)+68,12]+32,47
=68,12+32,47−32,47=68,12=68,12+32,47−32,47=68,12
b,[(−61,8)+(−123,6)]+(83,6+61,8)[(−61,8)+(−123,6)]+(83,6+61,8)
=83,6−123,6+61,8−61,8=−40 CHÚC BẠN HỌC TỐT NHA!!!
a. [(- 32,47) + 68,12] + 32,47= 68,12+ 32,47-32,47=68,12
b) [( -61,8 ) + ( -123,6 )] + ( 83,6 + 61,8 )
=83,6 - 123,6 + 61,8 - 61,8
=-4083,6 - 123,6 + 61,8 - 61,8
= -40Câu c mik vẫn chưa nghĩ ra, xl bạn nha
a)[(-32,47)+68,12]+32,47
= [(-32,47)+32,47]+68,12
= 0+68,12
= 68,12
b) [(-61,8)+(-123,6]+[83,6+61,8]
= [(-61,8)+61,8]+[(-123,6)+83,6]
=0+(-40)
=-40
c)-(2/7+1/3-5/6)-(-9/7+14/7-1/5+5/3)
= -(-3/14)-229/105
= 3/14-229/105
= -59/30
c, -(2/7+1/3-5/6)-(-9/7+14/7-1/5+5/3)
=(-2/7+9/7-14/7)-(1/3+5/3)+5/6+1/5
=(-1)-2+31/30
=-59/30
nha bạn nhớ ấn tick cho mình nha