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2 years ago

Which expression is equivalent to (7x - 5) - (3x - 2)

Mathematics

1 answer:

Kryger [21]2 years ago

7 0

Answer:

$4x-3$

Step-by-step explanation:

$(7x-5) -(3x-2)$

Remove unnecessary parentheses

$7x-5-(3x-2)$

When there is a " _" in front of any expression in parentheses , change the sign of each term of the expression.

$7x-5-3x+2$

Collect Like terms by subtracting their Coefficients

$(7-3)x$

Subtract the numbers

$4x-5+2$

Keep the sign of the number with the larger absolute value and subtract the smaller absolute value from the larger

$-(5-2)$

Subtract the numbers

$-3$

$4x-3$

PLEASE MARK ME AS BRAINLIEST

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3 years ago

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What is the multiplicative identity of -12/13

Nata [24]

Answer:

The number '1' is called the 'multiplicative identity' of a number '-12/13' because it does not change the number '-12/13' after getting multiplied by it.

Therefore, option (B) is true.

Step-by-step explanation:

We know that when a number let say 'n' get multiplied by '1', it remains unchanged.

i.e.

n × 1 = n

1 × n = n

The number '1' is called the 'multiplicative identity' of a number 'n' because it does not change the number 'n' after getting multiplied by it.

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Multiply the number '-12/13' by '1'.

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