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x+0.56=1.8解方程怎么写?????

3.8x-x=0.56方程步骤如下: 3.8x-x=0.56 2.8X=0.56(先计算方程的左边) 2.8X÷2.8=0.56÷2.8(方程的两边同时除以2.8即可得到未知数的值) x=0.2 解析:因为3.8x和X是同类项,所以直接把3.8和1相减后加上X即可。然后再用积除以系数得出方程的解。...

3.8x=0.56+0.2 3.8x=0.76 x=0.2

0.6+0.8x=0.56×4 0.6+0.8x=2.24 0.8x=2.24-0.6 0.8x=1.64 x=2.05

(1)x+56=102, x+56-56=102-56, x=46;(2)x-970=270,x-970+970=270+970,x=1240;(3)x÷0.8=1.25,x÷0.8×0.8=1.25×0.8, x=1;(4)x÷5=0.12, x÷5×5=0.12×5, x=0.6;(5)13x=2,13x÷13=2÷13, x= 2 13 ;(6)x÷0.8=1.25,x÷0.8×0.8=...

7x+3×1.4x=0.2×56 7x+4.2x=11.2 11.2x=11.2 x=1 (7x+3)×1.4x=0.2×56 9.8x²+4.2x-11.2=0

x÷56=0.7 x=56*0.7 x=39.2

5x一5=45, 5x=50 x=10 56x一6x=98, 50x=98 x=1.96 0.56x一0.14=42, 0.56x=42.14 x=75.25

解:x³+3x²+2x=336 x³+3x²+2x-336=0 x³-12x²+36x+15x²-34x-336=0 x(x²-12x+36)+(15x²-34x-336)=0 x(x-6)²+(15x+56)(x-6)=0 (x-6)【x²-6x+15x+56】=0 (x-6)(x²+9x+5...

x=0.56÷8 x=0.07

0.44x=2.2 X=5

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