Question

solve : 7x+5y=12 and 3x-2y =1 by subsitution method​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Solution

Given :-

• 7x + 5y = 12 ______(1)
• 3x - 2y = 1 ________(2)

Find :-

• Value of x & y

Explanation

substitution method

By, equ(2)

➡ x = (1 + 2y)/3________(3)

keep in equ(1)

➡ 6 × (1+2y)/3 + 5y = 12

➡2×(1+2y) + 5y = 12

➡2 + 4y + 5y = 12

➡9y = 12 - 2

➡9y = 10

➡y = 10/9

Keep value of y in equ(3)

➡x = (1 + 2 × 10/9)/3

➡x = (9+20)/18

➡x = 29/18

Hence

• Value of x = 29/18
• Value of y = 10/9

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