How do you solve #xy - 3x = 40#; #x= 5#?

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Answer 1 · 2018-06-09T12:31:21

# y =11#

#xy - 3x = 40# ----- equation (1)

Given #x = 5#

Substituting the value of #x# in equation (1):

#5 xx y - 3 xx 5 = 40#

#=> 5y - 15 = 40#

# => 5y = 40 +15 = 55#

#=> 5y =55#

#=> y = 55/5#

#therefore y = 11#