The value of x for the given equations will be 7.
An equation is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition,substraction, multiplication, and division.
First equation:
x+y= -9
y= -9 -x (moved the x over to the other side)
Add the new equation into the 2nd equation.
x + 2 (-9 -x) = -25
Solve to get the value of x.
x + (-18 -2x) = -25 [distributive property]
-x -18 = -25
-x = -7
x = 7
Therefore, the value of x for the given equations will be 7.
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