Question

solve y+3=10
a) 0
b) -7
c)7 ​

Answer 1

Answer:

answer is 7=y

Step-by-step explanation:

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Answer 2

Let the given linear equations be

⇒ 2x + 2y + z = 10; ---- (1)

⇒ 3x − y + 3z = 10; ---- (2)

⇒ 2x + 3y − 2z = 6 ---- (3)

From ---- (1) z = 10 - 2x -2y

By substituting z = 10 - 2x -2y in equation (2), we get

⇒ 3x − y + 3 (10 - 2x -2y ) = 10

I hope this helps you

⇒ 3x -y + 30 - 6x - 6y = 10

⇒ - 3x - 7y = - 20 ---- (4)