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x%0.52x=3.2×0.15(解方程)

0.48x=0.48 x=1

x-0.52x=3.2×0.15 0.48x=3.2×0.15 x=3.2×0.15/0.48=0.2×15/3=1

x(1-0.52)=0.48 1再用0.48÷(1-0.52)

x-0.52x=3.2×0.15 0.48x=0.48 x=1

x-0.52=1.3 x=1.3+0.52 x=1.82

1.3÷x=0.52 x=1.3/0.52 =2.5

x-0.52x=12 0.48x=12 x=25

题目不全

解方程:(1)x÷0.26=0.52 x÷0.26×0.26=0.52×0.26, x=0.1352;(2)9x-2x=21.7, 7x=21.7, 7x÷7=21.7÷7, x=3.1;(3)3.18×2-2x=4.26, 6.36-2x=4.26, 2x=6.36-4.26, 2x÷2=2.1÷2, x=1.05; (4)0.25x+3.75=12.0.25x+3.75-3.75=12-3.75,...

(1)x+45=550, x+45-45=550-45, x=505;(2)x-0.52=1.3,x-0.52+0.52=1.3+0.52, x=1.82;(3)x÷3=95, x÷3×3=95×3, x=285;(4)0.9x=2.43,0.9x÷0.9=2.43÷0.9, x=2.7.

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