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LuckyWell [14K]
3 years ago
10

What is the value of this expression when b=5? 6(2b-4)

Mathematics
2 answers:
Taya2010 [7]3 years ago
4 0
6(2(5) - 4)
6(10 - 4)
6(6)
36
castortr0y [4]3 years ago
3 0
Lets plug in the value and simplify using PEMDAS
6(2(5)-4)
6(10-4)
6(6)
36 is the value of this expression.
Give 5 stars and brainliest answer if this helped please!
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Daca a + b = 20 si b + c = 30 ,calculati 3 . a + 7 . b + 4 . c ( Dau coroana la cine ma ajuta )
Oduvanchick [21]

It is given that

a+b=20  -------------------- (1)

b+c=30 -----------------------(2)

We have to calculate

3 a + 4 b +7 c

Now multiplying equation(1 )by 3,we get

3 a+ 3 b=60  ----------------------------------(3)

and Multiplying equation( 2) by 4,we get

4 b + 4 c=120  -----------------------------------(4)

Adding expression (3) and (4),we get i.e left hand side of 3 to left hand side of 4 and right hand side of 3 to right hand side of 4.

3 a+ 3 b+ 4 b+ 4 c=60+120

Adding like terms, we get

3 a+ 7 b+ 4 c =180, Which is the required solution.



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