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2 years ago

As soon as possible please.

Mathematics

1 answer:

eduard2 years ago

7 0

Answer:

x = - 7

Step-by-step explanation:

Express the diagrams in equation form with output y

A y = 5x - 4

B y = 3x + 8

Equate the right sides so that A is 3 times B

5x - 4 = 3(3x + 8) ← distribute parenthesis

5x - 4 = 9x + 24 ( subtract 9x from both sides )

- 4x - 4 = 24 ( add 4 to both sides )

- 4x = 28 ( divide both sides by - 4 )

x = - 7

As a check

A y = 5(- 7) - 4 = - 35 - 4 = - 39

B y = 3(- 7) + 8 = - 21 + 8 = - 13

then - 13 × 3 = - 39

The required input is x = - 7

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