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Maksim231197 [3]
4 years ago
15

Solve for the indicated variable: 2[x + 3(x - 1)] = 18

Mathematics
2 answers:
natita [175]4 years ago
8 0
2(x+3(x-1))=18\\2(x+3x-3)=18 \\ 4x-3=18/2 \\ 4x-3=9 \\ 4x=9+3 \\ 4x=12 \\ x=12/4 \\ x=3
nirvana33 [79]4 years ago
7 0
2[x + 3(x - 1)] = 18\\
x+3x-3=9\\
4x=12\\
x=3


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Step-by-step explanation:

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3 years ago
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11. Find the product: (50z + 20)(10z + 4) ( 1 ) 12. Find the product: (88a + 80)(8a + 8) ( 1 ) 13. Find the product: (40y + zy)(
Vika [28.1K]

Answer:

11. 500z^{2}  +400z+80

12. 704a^2 + 1344a + 640

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Step-by-step explanation:

11. (50z + 20)(10z + 4) = ?

Using Formula:

(a+b) (c+d) = a(c+d)+b(c+d)

50z(10z+4) + 20(10z + 4) = \\\Rightarrow 500z^{2} + 200 z+200z+80\\\Rightarrow 500z^{2} +400z+80

12. (88a + 80)(8a + 8) = ?

Using Formula:

(a+b) (c+d) = a(c+d)+b(c+d)

\Rightarrow 88a(8a+8) + 80(8a + 8)\\\Rightarrow 704a^2 + 704a + 640a + 640\\\Rightarrow 704a^2 + 1344a + 640

13. (40y + zy)(4y + zy) = ?

Using Formula:

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4 years ago
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Step-by-step explanation:

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4 years ago
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Answer:

Step-by-step explanation:

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3 years ago
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