Question

If in the equation x + 2y = 12, the value of y is 7 , then the value of x will be​

Answer 1

Answer:

-2

Step-by-step explanation:

x+2y =12

=> x+2(7)= 12

=> x+14 = 12

=>x =12-14

=>x=-2

Answer 2

Given data: The equation $x+2y=12$ and $y=7$

To Find: The value of x in the given equation.

Solution:

• Equation can be defined as the two expressions that are equal.
• In the given equation, the value of x can be found by substituting the value of y.
• $x+2y=12$
• Substitute $y=7$ in the equation.
• $x+2(7)=12$
• $x+14=12$
• Transpose value 14 to the right.
• $x=12-14$
• Simplify the values.
• $x=-2$
• The value of x in the equation $x+2y=12$ is $x=-2$.