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lapo4ka [179]
2 years ago
5

Evaluate each numerical expression 7x(12+8)-6

Mathematics
2 answers:
zimovet [89]2 years ago
7 0

Answer:

134

Step-by-step explanation:

If this is right can I get brainliest?

lesantik [10]2 years ago
3 0

Answer:

140x − 6

Step-by-step explanation:

add the numbers

7x(12+8)-6

7x(20)-6

multiply the numbers

7x times 20-6

=140x-6

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3 years ago
ms. jeffers is splitting $775 among her three sons. of the oldest gets twice as much as the youngest and the middle son gets $35
Angelina_Jolie [31]

The oldest son will get $370, the middle will get $220 and the youngest will get $185.

Step-by-step explanation:

Given,

Total amount to be split = $775

Let,

Oldest son's share = x

Middle son's share = y

Youngest son's share = z

According to given statement;

x+y+z=775     Eqn 1

the oldest gets twice as much as the youngest

x = 2z             Eqn 2

the middle son gets $35 more than the youngest

y = z+35         Eqn 3

Putting value of x and y from Eqn 2 and 3 in Eqn 1

2z+(z+35)+z=775\\2z+z+35+z=775\\4z=775-35\\4z=740\\

Dividing both sides by 4

\frac{4z}{4}=\frac{740}{4}\\z=185

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x=2(185)\\x=370

Putting z=185 in Eqn 3

y=185+35\\y=220

The oldest son will get $370, the middle will get $220 and the youngest will get $185.

Keywords: linear equation, substitution method

Learn more about substitution method at:

  • brainly.com/question/11175936
  • brainly.com/question/11203617

#LearnwithBrainly

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3 years ago
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7/9(.8) is greater. 7 divided by 9 equals .77 rounded to .8 which is greater than 7/10(.7)
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