(x+16)*2.1=42 x-0.6x=4.888 16*5-5x=26.5 98.6-0.25x=46.3 x-2.8+2.2=5 4.5-1.5x=1.5 8*(2x-5)=28
人气:184 ℃ 时间:2020-04-18 04:37:54
解答
(x+16)*2.1=42 x+16=20x=4x-0.6x=4.888 0.4x=4.888x=12.2216*5-5x=26.5 5x=80-26.55x=53.5x=10.798.6-0.25x=46.3 0.25x=98.6-46.30.25x=52.3x=209.2x-2.8+2.2=5 x-0.6=5x=5.64.5-1.5x=1.5 1.5x=4.5-1.51.5x=3x=28*...
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