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Vaselesa [24]
3 years ago
15

5x+2y = 19 1x + 4y=13

Mathematics
2 answers:
zalisa [80]3 years ago
8 0
{x,y} %}14 because u have to get the number the do _____ then ____
Mama L [17]3 years ago
7 0

Answer:

{x,y} = {25/9,23/9}

Step-by-step explanation:

// Solve equation [2] for the variable  x  

 

 [2]    x = -4y + 13

// Plug this in for variable  x  in equation [1]

  [1]    5•(-4y+13) + 2y = 19

  [1]     - 18y = -46

// Solve equation [1] for the variable  y  

  [1]    18y = 46  

  [1]    y = 23/9  

// By now we know this much :

   x = -4y+13

   y = 23/9

// Use the  y  value to solve for  x

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5 0
3 years ago
What is 100-A + 20 -70
algol [13]

Answer:

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Step-by-step explanation:

assuming you mean 100-A+20-70=0

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6 0
3 years ago
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3 years ago
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Solnce55 [7]

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Step-by-step explanation:

You can solve using PEMDAS:

Parentheses

Exponents

Multiplication

Division

Addition

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No exponents

3(7)-5(3)+8=?

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No division

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5 0
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