1.(-3/4)+9/8x(-2/3)
2.(-3)*[-(-5+7)]-(-4)
I want to ask Maths
2007-09-03 11:58 pm
回答 (2)
2007-09-04 12:12 am
1.
-3/4 + 9/8 × (-2/3)
= -3/4 - 9/8 × 2/3
= -3/4 - 3/4
= -6/4
= -3/2
2.
(-3) × [-(-5+7)] - (-4)
= (-3)×(-2) + 4
= 6 + 4
= 10
2007-09-03 16:16:48 補充：
Note: Two mistakes are found in the answer of [stevewth], - Step 4 of Q1- Step 3 and answer of Q2
-3/4 + 9/8 × (-2/3)
= -3/4 - 9/8 × 2/3
= -3/4 - 3/4
= -6/4
= -3/2
2.
(-3) × [-(-5+7)] - (-4)
= (-3)×(-2) + 4
= 6 + 4
= 10
2007-09-03 16:16:48 補充：
Note: Two mistakes are found in the answer of [stevewth], - Step 4 of Q1- Step 3 and answer of Q2
2007-09-04 12:07 am
1.
-3/4 + 9/8x(-2/3)
=-3/4 - 9/8 x 2/3
=-3/4 - 3/4
=-6/8
=-3/2
2.
(-3)*[-(-5+7)]-(-4)
=(-3)*[-2]+4
=(-3)*2
=9
-3/4 + 9/8x(-2/3)
=-3/4 - 9/8 x 2/3
=-3/4 - 3/4
=-6/8
=-3/2
2.
(-3)*[-(-5+7)]-(-4)
=(-3)*[-2]+4
=(-3)*2
=9
收錄日期: 2021-04-13 13:16:14
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