Question

find the value of x and y if ( 3x - 2y , 7 ) = ( 11 , x + y )

Answer 1

Answer:

x = 5 and y = 2

Step-by-step explanation:

When we say (a, b) = (c, d), we mean a = c & b = d.

Here, (3x - 2y, 7) = (11, x + y).

=> 3x - 2y = 11 & 7 = x + y

As 7 = x + y => 7 - x = y

Subtitute this in other one,

=> 3x - 2(7 - x) = 11

=> 3x - 14 + 2x =11

=> 5x = 11+14=25

=> x = 25/5 = 5

Therefore 7 - x = y

=> 7 - 5 = 2 = y

Answer 2

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