1.7x+2×2.5=101 4又1/2÷18×(2.7-1.9) 4又3/5-1又1/4-1.75+0.4 帮我解题嗯哼
问题描述:
1.7x+2×2.5=101 4又1/2÷18×(2.7-1.9) 4又3/5-1又1/4-1.75+0.4 帮我解题嗯哼
答
1.7x+2×2.5=101
1.7x=101-5
1.7x=96
x=960/17
4又1/2÷18×(2.7-1.9)
=9/2÷18x0.8
=1/4x0.8
=0.2
4又3/5-1又1/4-1.75+0.4
=(4.6+0.4)-(1.25+1.75)
=5-3
=2
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