Write four solutions of the equation 8x - 3y = 7
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See explanation.
Explanation:
The starting system can be written as:
{−8x+3y=713x−3y=−17
We can see that the coefficients of y are opposite numbers, so if we add both sides of the equations we get rid of one variable:
5x=−10⇒x=−2
Now if we substitute the calculated value of x to any of the equations we can calculate the remaining variable y:
−8⋅(−2)+3y=7
16−3y=7
−3y=−9⇒y=−3
Finally we can write that the solution is:
{x=−2y=−3
Explanation:
The starting system can be written as:
{−8x+3y=713x−3y=−17
We can see that the coefficients of y are opposite numbers, so if we add both sides of the equations we get rid of one variable:
5x=−10⇒x=−2
Now if we substitute the calculated value of x to any of the equations we can calculate the remaining variable y:
−8⋅(−2)+3y=7
16−3y=7
−3y=−9⇒y=−3
Finally we can write that the solution is:
{x=−2y=−3
Answered by
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Answer:
this is correct answer
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