asiahaileyy89 asiahaileyy89

16-09-2021
Mathematics

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solve the system of equations -4x+8y=40 and -2x+y=-10 combining the equations

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ang12321 ang12321

16-09-2021

－4x＋8y＝40
－2x＋y＝－10

－4x＋8y＝40
y＝－10＋2x

－4x＋8(－10＋2x)＝40

x＝10

y＝－10＋2×10

y＝10

(x, y)＝(10, 10)

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