Question

Identify which of the following are linear equation in one variable. 1)7x-3=9.
2)5y+2=5y+7.
c)2+2y=Z+5


please answer​

Answer 1

Answer:

Step-by-step explanation:

1)

7 x − 3 = 9

7 x = 12

x = 12 /7

2)

5 y + 2 − 5 y = 7

0 + 2 = 7

2 = 7

No Solution

C)

Solution for y

2 + 2 y = Z + 5

2 y = Z + 3

y = Z /2 + 3 /2

Solution for z

2 + 2 y = Z + 5

Z+5=2+2y

Z=2+2y−5

Z=2y−3

Answer 2

Answer:

1)7x-3=9

Step-by-step explanation:

What is a variable ?

A variable is a number whose value is unknown and is undefined.

Question

Which one of them is a linear equation in one variable.

Why 7x-3=9 is a linear equation in one variable?

Because it has one variable which is x. So it is a linear equation in one variable.

Add to your knowledge

A constant is one whose value is defined and is known to us.

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