3 years ago

The difference between twice a number and half that number is 30. What is the number?

Mathematics

1 answer:

il63 [147K]3 years ago

5 0

Answer:

x=20

Step-by-step explanation:

Equation equals 2x-(1/2)x=30

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Step-by-step explanation:

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x = # of ham sandwiches

14-x = # of turkey sandwiches ( as Lexi made 14 sandwiches)

as the question said that the number of ha sandwiches are 4 less than twice number of turkey sandwiches,

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3 years ago

Elimination<br>3x +2y=9<br>3x ty=0<br>1

muminat

Answer:

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Step-by-step explanation:

Given

$3x + 2y = 9$

$3x + y = 0$

Required

Solve by elimination

To do this, we subtract both equations (to eliminate x)

$3x + 2y = 9$

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--------------------

$3x - 3x + 2y - y = 9-0$

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Substitute $y = 9$ in $3x + y = 0$

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Step-by-step explanation:

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Step-by-step explanation:

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