Question

3x×4у = 10
2x-2y=2
solve this equation by substitution method ​

Answer 1

Answer:

x=2 and y=1

Explanation:

By substitution method, 3 x + 4 y = 1 0 & 2 x − 2 y = 2 ⇒ 2 (x − y) = 2 ⇒ x − y = 1 ___ (2)

∴ x = y + 1 → (1). Substituting in equation (2).

∴ 3 x + 4 y = 1 0 ⇒ 3 (y + 1) + 4 y

= 1 0 ⇒ 3 y + 3 + 4 y

= 1 0 ⇒ 7 y = 7

⇒ y = 1

∴ x = 1 + 1

x= 2

x = 2, y = 1

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