Question
The first step in finding the solution with elimination is _____________.
18x + y = -10
-18x - 9y = 6
- Cross out the y and -y
- Cross out the 18x and -18x
- Change all the signs of the second equation
- Add -10 and 6
Hint:
In this question we have to find the first step in finding the solution with elimination . where the equations are 18x + y = -10 and -18x - 9y = 6. In elimination method , we have to multiply in both equation by number which is lowest common multiple for one of the variable. Then perform the addition or subtraction to eliminate the variable and substitute the that variable in equation and find the other equation.
The correct answer is: Cross out the 18x and -18x
Here we have to find the first step for the solution.
Firstly , the equations are
18x + y = -10 .........(1)
-18x - 9y = 6 .........(2)
Now , add eq(1) and eq (2) , we have
18x + y = -10
-18x - 9y = 6
--------------------------
0 - 8 y = -4
y = 1/2
Therefore, the first step in finding the solution is Cross out the 18x and -18x.
The correct answer is Cross out the 18x and -18x.
The first step in finding the solution with elimination is cross out the 18x and -18x.
In this question, we have to find the first step but the equation is solved by the elimination method. In elimination method you have two equation. we have to multiply in both equation by number which is lowest common multiple for one of the variable. Then perform the addition or subtraction to eliminate the variable and substitute the that variable in equation and find the other equation.
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