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22-10-2021
Mathematics

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solve the system of equations by the substitution method .
y=5x+8
y=8x+9

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zechariahadegboye123 zechariahadegboye123

22-10-2021

Answer:

rearrange the question

y - 5x = 8.................(1)

y - 8x = 9..................(2)

make y the subject formula in eqn. (1)

y = 8 + 5x................(3)

substitute

8 + 5x - 8x = 9

-3x = 1

x = -⅓

y = 8 + 5x

y = 8 + (-⅓)

y = 23/3

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