Question

Q.3 Solve the given equations by elimination method
6x + 8y = 20 & 4x – 4y = 4​

Answer 1

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Answer 2

Step-by-step explanation:

6x+8y=20 (1)

4x-4y=4 (2)

3x+4y=10

x-y=1

x=1+y

3x+4y=10

3(1+y)+4y=10

3+3y+4y=10

3+7y=10

7y=7

y=1

so

x=1+y

x=1+1

x=2