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2 years ago

Find the value of n that makes equation true. 5n =20 n + 5 = 10 2n = 3 n + 5 = 13

Mathematics

2 answers:

Kamila [148]2 years ago

8 0

Answer:

n+5=10

Step-by-step explanation:

Mademuasel [1]2 years ago

5 0

Answer:

5(4) = 20

5 + 5 = 10

2(1.5) = 3

8 + 5 = 13

Step-by-step explanation:

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Vesnalui [34]

Answer:

Step-by-step explanation:

1) 4x -3

x = -7 ;

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2) 6 -3x

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$3) \dfrac{3x - 21}{7}\\\\x = -7\\\\\\\dfrac{3*(-7)-21}{7}=\dfrac{-21-21}{7}=\dfrac{-42}{7}=-6\\\\\\x = 14\\\\\dfrac{3*14-21}{7}=\dfrac{42-21}{7}=\dfrac{21}{7}=3\\\\\\x=0\\\\\dfrac{0-21}{7}=\dfrac{-21}{7}=-3\\\\$

$\dfrac{3x}{7}-21\\\\\\x = -7\\\\\dfrac{3*(-7)}{7}-21=-3-21=-24\\\\\\x =14\\\\\dfrac{3*14}{7}-21=3*2-21=6-21=-15\\\\\\x=0\\\\\dfrac{0}{7}-21=-21$

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2 years ago