7x - 2y = 5ху
8х +7y= 15ху
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Answered by
2
Answer:
7x - 2y = 5xy
8x + 7y = 15xy
Answered by
5
Hey there!
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Answer (1)
→ 7x - 2y = 5xy
→ 7x - 2y + -5xy = 5xy + -5xy
→ -5xy + 7x - 2y + 2y = 0 + 2y
→ -5xy + 7 x = 2y
→ x (-5y + 7)/-5y + 7 = 2y/-5y + 7
→ x = 2y/-5y + 7
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Answer (2)
→ 8x + 7y = 15xy
→ 8x + 7y + -15xy = 15xy + -15xy
→ -15xy + 8x + 7y = 0
→ -15xy + 8x = -7y
→x (-15y + 8)/-15y + 8 = -7y/-15y + 8
→ x = -7y/-15y + 8
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Thanks!
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