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The fifth grade mathematics first volume solves the equation application problem solution.
1 there should be x tons,

0.5[0.5(0.5x-0.5)-0.5]-0.5=6

x=55

Suppose that the money of my sister and my brother are both X.

3(X-290)=X- 170

3X-870=X- 170

2X=- 170 plus 870

2X=700

X=700/2

X=350

I hope I can help you!

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