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Iteru [2.4K]
4 years ago
8

Tyson began solving the system ​ {4x+2y=64x+5y=15 ​ by writing −3y=−9 .

Mathematics
1 answer:
Artyom0805 [142]4 years ago
5 0
<span>4x+2y=6     (1)
4x+5y=15   (2)

1)  - (2) =4x-x4 +2y -5y = 6 - 15
equivalent to -3y= -9
so the true answer is  </span><span>subtraction property of equality</span>
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