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Question

Solve x3y=33 and 7x+8y=52

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Solution

Given 4x+3y=25 ......... (1)
7x+8y=52 ....... (2)
Multiplying equation (1) by 7 gives
28x+21y=175 .......... (3)
Multiplying equation (2) by 4 gives
28x+32y=208 ............ (4)
11y=33
y=3
Using this in (1), we get
4x+3×3=25
4x=259=16
x=4

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