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2 years ago

Maria thinks of a number double it and add 5 answer is 21 write as an equation in X and solve it to find Maria's number

Mathematics

2 answers:

lys-0071 [83]2 years ago

5 0

Answer:

The number is 8

Step-by-step explanation:

<em>2x +5 =21 </em>

2x= 21-5

2x=16

2x/2=16/2

x=8

To check

8×2=16

16+5=21

Alexxx [7]2 years ago

5 0

Answer : Maria’s number is 8

2x + 5= 21

2x = 21 -5 ( taking whole number to other side of =)

2x = 16

X= 16/2

X= 8

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Step-by-step explanation:

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Step-by-step explanation:

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Using direct proofs.

Let x and y be

Such that:

$x = \frac{1}{2}$

$y = \frac{2}{3}$

The sum:

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<em>The above proof works for all values of A, B, x and y; as long as they are rational values</em>

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Step-by-step explanation:

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Read 2 more answers

Maria thinks of a number double it and add 5 answer is 21 write as an equation in X and solve it to find Maria's number​

Maria thinks of a number double it and add 5 answer is 21 write as an equation in X and solve it to find Maria's number