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GrogVix [38]
3 years ago
8

3x+5y=4, 2x-y=-7 solve using substitution

Mathematics
1 answer:
victus00 [196]3 years ago
6 0
 <span>3x+5y=4...(1)
 2x-y=-7...(2)
by(2) : y = 2x+7
subsct in (1) : 
3x +5(2x+7) = 4 
13x = - 31
x = -31/13
y = 2(-31/13)+7 = 29/13</span>
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