Question

x+2y=3 3x+5y=7 with elemination methods

Answer 1

Answer:

x=-1 y=2

Step-by-step explanation:

x+2y=3

3x+5y=7

3x+6y=9

3x+5y=7

-. -. -

y = 2

x+4=3

x=-1

Answer 2

Answer:

Given equations —

• x+2y=3 ———(1)
• 3x+5y=7 ———(2)

Now,

eq(1) ×3 → 3x + 6y = 9 ———(3)

• Eq (3) - eq(2) ↓

→ 3x + 6y - (3x + 5y ) = 9 - 7

→ 3x + 6y - 3x - 5y = 2

→ $\bold{\boxed{y\:=\:2}}$

Putting y = 2 in eq(1) , we have

† x+ 2×2 =3

→ x + 4 = 3

→ x = 3 - 4

→ $\bold{\boxed{x\:=\:-1}}$

Hence ,

★ x ☞ -1

★ y ☞ 2