Question

solve the pair of linear equation X + Y equal to 5 2 x minus 3 Y equal to 4​

Answer 1

Answer:

X=3.8, y=1.2

Step-by-step explanation:

x+y=5

=>X=5-y...........eqn¹

2x-3y=4...........eqn²

putting X in eqn² we get

2(5-y)-3y=4

=>10-2y-3y=4

=>-5y=4-10

=>5y=6

=>y=6/5

=>y= 1.2

putting y in eqn¹ we get

X=5-1.2=3.8

Answer 2

$x + y = 52 \: \: \: \: \:eq1 \\ x - y = 4 \: \: \: \: eq \: 2 \\ \\ \\adding \:eqn \: 1 + 2 \\ x + y = 52 \\ x - y = 4 \\ - - - - - \\ 2x =4 8 \\ x = \frac{ 48}{2} \\ x = 24 \\ substituting \: x \: in \: eqn \: 2 \\ x - y = 4 \\ 24 - y = 4 \\ 24 - 4 = y \\ y = 20$

There fore x = 24 and y = 20

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