0.4(15 - 5x + 20 -10x)
rewrite and combine common terms
0.4 (15 + 20 -5x -10x)
0.4 (35 - 15x) .4 is the same as 4/10 or 2/5 reduced
2(35 - 15x) take a multiple of 5 out of the
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5
2* 5(7 - 3x)
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5
2(7 - 3x) = 14 - 6x