3 years ago

5x-9y-42=?(x+6)-9(y+?)

Mathematics

2 answers:

iren [92.7K]3 years ago

5 0

Answer:

5 8

Step-by-step explanation:

Coefficient of x should be 5 so first ? should be 5 let the second ? = z

5×6-9×z=-42

30+42=9z

z=8

Dmitry [639]3 years ago

5 0

Answer:

5x-9y-42=5(x+6)-9(y+8)

Step-by-step explanation:

given 5x-9y-42=5x-9y-72+30

=5x+30-9y-72

=5(x+6)-9(y+8)

hence 5x-9y-42=5(x+6)-9(y+8)

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