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gl648809
30.03.2020 •
Mathematics
Which of these strategies would eliminate a variable in the system of equations?
\begin{cases} -7x + 2y = 5 3x - 5y = -5 \end{cases}
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−7x+2y=5
3x−5y=−5
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Ответ:
The solution for given equations
and
are x = -0.517 and y = 0.6896.
Step-by-step explanation:
The given is,
Step:1
Equation (1) is multiplied by 5 ( Eqn(1) × 5)
Equation (2) is multiplied by -2 ( Eqn (2) × -2 )
Step:2
Subtract the equation (3) and (4),
( - )
x = -0.517
From the x value equation (2) becomes,
y = 0.6898
Step:3
Check for solution,
5 = 5
Result:
The solution for given equations
and
are x= -0.517 and y = 0.6896.
Ответ:
Step-by-step explanation: