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Lapatulllka [165]
3 years ago
6

Solve this system of equations. x + y + z = 6 3x + 3y + 3z = 18 -2x − 2y − 2z = -12

Mathematics
1 answer:
natita [175]3 years ago
6 0
We know that

A system of three linear equations can have one solution, an infinite number of solutions, or no solution. Systems of equations can be classified by the number of solutions.

If a system has at least one solution, it is said to be consistent 

If a consistent system has an infinite number of solutions, it is dependent. When you graph the equations, both equations represent the same line

in this problem we have

<span>x + y + z = 6---------> equation 1
</span><span>3x + 3y + 3z = 18------> equation 2
</span><span>-2x − 2y − 2z = -12--------> equation 3

if in the equation 2 divides by 3 both sides
</span>3x + 3y + 3z = 18-------> x + y + z = 6------> equation 2 is equal to equation 1

if in the equation 3 divides by -2 both sides
-2x − 2y − 2z = -12-------> x + y + z = 6------> equation 3 is equal to equation 1

so
equation 1, equation 2 and equation 3 are the same

therefore

<span>the system of equations has infinite solutions
</span>Is a <span>Consistent and Dependent System</span><span>


</span>
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