Q. math~——–
10y + 16n – 12x + 19y – n + 10x
= 10y + 16n – 12x + 19y – n + 10x
= 29y + 16n – 12x – n + 10x
= 29y + 15n – 12x + 10x
= 29y + 15n – 2x
= 15n – 2x + 29y
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10y + 16n – 12x + 19y – n + 10x = 15n – 2x + 29y
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- 10y + 16n – 12x + 19y – n + 10x
- 10y + 19y + 16n – n – 12x + 10x
- 29y + 15n – 2x