Question

(x+11)/7 + 2y =10 and 3x = 8+(y+7)/11 by substitution method

Answer 1

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(x + 11)/7 + 2y = 10

=> (x + 11 + 14y)/7 = 10

=> x + 14y = 70 - 11

=> x + 14y = 59

=> x = ( 59 - 14y)--------(1)


3x = 8 + (y + 7)/11

=> 3x = (88 + y +7)/11

=> 3x = (95 + y))/11

=> 33x = 95 + y

=> 33( 59 - 14y) = 95 + y--------from --(1)

=> 1947 - 462y = 95 + y

=> 1852 = 463y

=> y = 1852/463

=> y = 4 put in --(1)

we get

x = 59 - 4 × 14

=> x = 59 - 56

=> x = 3

Answer 2

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