–2.4+3.5–4.6+3.5等于多少
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–2.4+3.5–4.6+3.5等于多少
–2.4+3.5–4.6+3.5等于多少
–2.4+3.5–4.6+3.5等于多少
=【-(2.4+4.6)】+【+(3.5+3.5)】
=(-7)+7
=0
如果不对请追问,
你的采纳就是对我们最大的肯定!
-2.4+3.5-4.6+3.5
=(3.5+3.5)-(2.4+4.6)
=7-7
=0