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kow [346]
4 years ago
15

What is the value of x in the equation 4x - 20 = -4

Mathematics
2 answers:
kari74 [83]4 years ago
7 0
X = 6
4x - 20 =-4
4x - 20 =-4
       --------
4x = 24
----------
4       4

x = 6
ICE Princess25 [194]4 years ago
4 0
4x-20+=-4
-4          -4

x-20=-8
   +20  +20

x=12.
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Step-by-step explanation:

Hi, to answer this question we have to write a system of equations with the information given:

<em>"Two kg of tea and 3 kg of sugar cost rupees 39 in january 1997": </em>

2 t + 3 s =39 (a)

Where:

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  • s = price of 1 kg of sugar

<em>"in march 1997 the price of the tea increased by 25% (1.25)and the price of the sugar increased by 20%(1.20) and the same quantity of tea and sugar cost rupees 48.30. "</em>

2(t1.25)+3(s1.2) = 48.30 (b)

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tea = 15 rupees per kg

sugar= 3 rupees per kg

Feel free to ask for more if needed or if you did not understand something.

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