Asked by Biplab KC
Solve the system by substitution.
2x − y = −21
4x + 5y = 7
2x − y = −21
4x + 5y = 7
Answers
Answered by
oobleck
y = 2x+21, so
4x + 5(2x+21) = 7
solve for x, then use that to get y
4x + 5(2x+21) = 7
solve for x, then use that to get y
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