0.8x+3.2=7.212.5-3x=6.556.4÷x+14.8=24.21.2(x-0.64)=0.54x+12.5=3.5x7.3×2.1-0.9x=7.86递等式计算(能简则简)6.4×0.29+6.4×8.71+6.4===2.98×1.25×(4-0.8)×0.25===9.9×101-9.9===[0.68÷(3.2-3.03)+1.4]÷(6-0.6)===全部答出给一百!明
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![0.8x+3.2=7.212.5-3x=6.556.4÷x+14.8=24.21.2(x-0.64)=0.54x+12.5=3.5x7.3×2.1-0.9x=7.86递等式计算(能简则简)6.4×0.29+6.4×8.71+6.4===2.98×1.25×(4-0.8)×0.25===9.9×101-9.9===[0.68÷(3.2-3.03)+1.4]÷(6-0.6)===全部答出给一百!明](/uploads/image/z/4324920-24-0.jpg?t=0.8x%2B3.2%3D7.212.5-3x%3D6.556.4%C3%B7x%2B14.8%3D24.21.2%EF%BC%88x-0.64%EF%BC%89%3D0.54x%2B12.5%3D3.5x7.3%C3%972.1-0.9x%3D7.86%E9%80%92%E7%AD%89%E5%BC%8F%E8%AE%A1%E7%AE%97%EF%BC%88%E8%83%BD%E7%AE%80%E5%88%99%E7%AE%80%296.4%C3%970.29%2B6.4%C3%978.71%2B6.4%3D%3D%3D2.98%C3%971.25%C3%97%284-0.8%29%C3%970.25%3D%3D%3D9.9%C3%97101-9.9%3D%3D%3D%5B0.68%C3%B7%283.2-3.03%29%2B1.4%5D%C3%B7%286-0.6%29%3D%3D%3D%E5%85%A8%E9%83%A8%E7%AD%94%E5%87%BA%E7%BB%99%E4%B8%80%E7%99%BE%21%E6%98%8E)
0.8x+3.2=7.212.5-3x=6.556.4÷x+14.8=24.21.2(x-0.64)=0.54x+12.5=3.5x7.3×2.1-0.9x=7.86递等式计算(能简则简)6.4×0.29+6.4×8.71+6.4===2.98×1.25×(4-0.8)×0.25===9.9×101-9.9===[0.68÷(3.2-3.03)+1.4]÷(6-0.6)===全部答出给一百!明
0.8x+3.2=7.2
12.5-3x=6.5
56.4÷x+14.8=24.2
1.2(x-0.64)=0.54
x+12.5=3.5x
7.3×2.1-0.9x=7.86
递等式计算(能简则简)
6.4×0.29+6.4×8.71+6.4
=
=
=
2.98×1.25×(4-0.8)×0.25
=
=
=
9.9×101-9.9
=
=
=
[0.68÷(3.2-3.03)+1.4]÷(6-0.6)
=
=
=
全部答出给一百!
明天答就不给分了!
0.8x+3.2=7.212.5-3x=6.556.4÷x+14.8=24.21.2(x-0.64)=0.54x+12.5=3.5x7.3×2.1-0.9x=7.86递等式计算(能简则简)6.4×0.29+6.4×8.71+6.4===2.98×1.25×(4-0.8)×0.25===9.9×101-9.9===[0.68÷(3.2-3.03)+1.4]÷(6-0.6)===全部答出给一百!明
1 0.8x=4 x=5
2 3x=6 x=2
3 56.4÷x=9.4 x=6
4 1.2x=0.54+0.768=1.308 x=1.09
5 2.5x=12.5 x=5
6 0.9x=7.47 x=8.3
7 6.4×0.29+6.4×8.71+6.4
=6.4×(0.29+8.71+1)
=6.4×10
=64
8 2.98×1.25×(4-0.8)×0.25
=2.98×1.25×(4×0.25)-2.98×1.25×(0.8×0.25)
=2.98×1.25-2.98×0.25
=2.98
9 9.9×101-9.9
=9.9×(101-1)
=9.9×100
=990
10 [0.68÷(3.2-3.03)+1.4]÷(6-0.6)
=(0.68÷0.17+1.4)÷5.4
=(4+1.4)÷5.4
=1