5x-3y=2 4x+7y=-3 solve by substitution method class 9
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Step-by-step explanation:
5x-3y=2..…........…........….....….....1)
4x+7y=-3.......……………………………2)
In equation 1
X=(2+3y)/5…………………………3)
Put the value of x in equation 2
4(2+3y)/5+7y=-3
(8+12y)/5+7y=-3
(8+12y+35y)/5=-3
8+47y=-15
47y=--7
y=-7/47
Put the value of y in equation 3
X=[2+3×(-7/47)]/5
X=(2-21/47)/5
X=[(94-21)/47]/5
X=73/47/5
X=73/215
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