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eimsori [14]
4 years ago
9

9x+10y=29 10x+9y=28 Solve by elimination

Mathematics
1 answer:
Fofino [41]4 years ago
7 0
(9x + 10y = 29)9
(10x + 9y = 28) - 10

81x + 90y = 261
- 100x - 90y = - 280
- 19x = - 19
x = 1
9(1) + 10y = 29
9 - 9 + 10y = 29 - 910y=20
y=2
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Use order of operations to solve.
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