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Math Problem 3: Problem of simplification and evaluation: Problem of grade five.
1.1.35m-8-m = 0.35m-8 = 0.35 *10-8 =-4.5.

2. 1.5x+4(0.5x-2.4)= 1.5x+2x-9.6 = 35-9.6 = 25.4。

Three. = 15x+0.25-x/2 = 14.5 x-0.25 = 1 1.35

Four. = 4x+ 12y- 10y+6x = 10x+2y = 70+ 10 = 80。

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