3 years ago

-4 (5y + 5) = -120 y =

Mathematics

2 answers:

Sedbober [7]3 years ago

6 0

-4 (5y + 5) = -120

multiply the bracket by -4

(-4)(5y)=-20y

(-4)(5)=-20

-20y-20=-120

move -20 to +20

-20y-20+20=-120+20

-20y=-120+20

-20y=-100

divide both sides by -20 to get y by itself

-20y/-20=-100/-20

Answer: y=5

Serga [27]3 years ago

6 0

Answer:

Step-by-step explanation:

-4(5y + 5) = -120

-4*5 y = -20 y

-4*5 = 20

-20 y + 20 = -120

-20 -20

______________

-20 y -100

-20 y -20

y=50

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