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Question

Solve the following pair of simultaneous equations:
32x53y+5=0 and 23x+72y25=0

A
x=181+6456;y=126+2252
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B
x=1115+716109;y=1137112
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C
x=31251423;y=813+61156
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D
x=101571072;y=215+61072
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Solution

The correct option is D x=101571072;y=215+61072
a1x+b1y+c1=0
a2x+b2y+c2=0
xb1c2b2c1=yc1a2c2a1=1a1b2a2b1
Solving by cross multiplication
x1015710=y215+610=142+30
So, x1015710=172x=101571072
and
y215+610=142+30y=215+61072
Hence
x=101571072;y=215+61072

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