Question

Zina solves a system of linear equations by elimination and finds a solution of (2, 2). One of the equations is a + b = 4. What is the other equation?

Answer 1

The other equation is 2 + 2 = 4.

Step-by-step explanation:

The solution to the system of linear equations using the elimination method is (2, 2) and one of the equations is a + b = 4. To find the other equation, we can substitute the solution (2, 2) into the equation a + b = 4.

Substituting a = 2 and b = 2 into the equation, we get:

2 + 2 = 4

4 = 4

Therefore, the other equation is 2 + 2 = 4.

Answer 2

a - b = 0 <=== ur other equation

check...
a + b = 4
a - b = 0
--------------add
2a = 4
a = 4/2
a = 2

a - b = 0
2 - b = 0
-b = 0 - 2
-b = -2
b = 2

solution is (2,2)