Question

find x and y by using substitution method . dont spammmm pls​

Answer 1

Answer:

4, 1

Step-by-step explanation:

2X + Y = 9 (1)

X - Y = 3 (2)

X = 3+Y

SUBSTITUTING X IN (1) WE HAVE

2Y + 6 + Y = 9

3Y= 3

Y = 1

X = 3+ 1 = 4

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Answer 2

Answer:

$2x+y=9-------(i) \\ x-y=3-----(ii) \\\\ \text{From eq.(ii)} \\\\ x=y+3 \\\\\\ 2x+y=9 \\\\ \text{Replace x with y+3} \\\\ 2(y+3)+y=9 \\\\ 2y+6+y=9 \\\\ 3y=6-3 \\\\ 3y=3 \\\\ \bold{y=1} \\\\\\ \text{We know,} \ x-y=3 \\\\ \text{Substituting y with 1} \\\\ x-1=3 \\\\ \bold{x=4}$

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