4 years ago

Simplify: 8x + 4 - 5

Mathematics

2 answers:

ra1l [238]4 years ago

5 0

To simplify that expression you'll join like terms.

8x + 4 - 5
8x - 1

Ivan4 years ago

3 0

8x + 4 -5

Calculate the sum or difference.

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

- ( 5 - 4 )

Subtract the numbers.

-1

8x - 1

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-7n - 15 ≥ 21? n ≥ -4 n ≥ 7.2 n ≤ -4 n ≤ 4

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

$\diamond\large\textsf{\textbf{Question:-}}}}$

-7n-15≤21. find n

$\diamond\large\textsf{\textbf{\underline{\underline{Answer and how to solve:-}}}}$

❖ Add 15 to both sides:-

-7n≤21+15

-7n≤36

❖ Now divide by -7 on both sides:-

n≥-5.14 or

n≥-5

The inequality sign changed because we divided both sides by a negative number.

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2 years ago

<img src="https://tex.z-dn.net/?f=%20-%2022%20%3D%2011%20-%206a" id="TexFormula1" title=" - 22 = 11 - 6a" alt=" - 22 = 11 - 6a"

jolli1 [7]

<h3>The value of a is equal to 5.5</h3>

-22 = 11 - 6a

Add 6a to both sides.

6a - 22 = 11

Add 22 to both sides.

6a = 33

Divide both sides by 6.

a = 5.5

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3 years ago