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3 years ago

14

7r-5r+8=9r+8-r translate to an equation, then solve

1 answer:

pshichka [43]3 years ago

7 0

Answer:

r=0

Step-by-step explanation:

7r-5r+8=9r+8-r

This is already an equation

Combine like terms

2r+8 = 8r+8

Subtract 2r from each side

2r-2r +8 = 8r-2r +8

8 =6r+8

Subtract 8 from each side

8-8 = 6r+8-8

0 = 6r

Divide by 6

0/6 = 6r/6

0 =r

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Answer:

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Step-by-step explanation:

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3 years ago

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o-na [289]

Answer:

Like terms: $-7y^2$ and $y^2$ , $0.5kt$ and $-10kt$ , $6$ and $9$

Not like terms: $-4p$ and $p^2$ , $5x$ and $5$ , $3ad$ and $2bd$

Step-by-step explanation:

Two or more terms are called like terms if they have same variables and powers.

$-7y^2$ and $y^2$ are like terms because they have same variable y with same power 2.

$-4p$ and $p^2$ are not like terms because they have same variable y with different powers.

$0.5kt$ and $-10kt$ are like terms because they have same variables kt with same power 1.

$6$ and $9$ are like terms because both are constant.

$5x$ and $5$ are not like terms because one have variable and other is constant.

$3ad$ and $2bd$ are not like terms because they have different variables.

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Not like terms: $-4p$ and $p^2$ , $5x$ and $5$ , $3ad$ and $2bd$

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