Respuesta :
Answer:
15
Step-by-step explanation:
Since we know x = 2 and z = 3x, let's find z by substituting the value for x into z:
z = 3(2) = 6
Now that we have the values of both x and z, we can substitute them into the expression and simplify:
x + 4z - 5 - 3x
= 2 + 4(6) - 5 - 3(2)
= 2 + 24 - 5 - 6
= 15
The equation gives 15 when we substitute x = 2 and z = 3x in the given equation.
What is substitution?
Substitution means replacing the variables (letters) in an algebraic expression with their numerical values.
According to the given question.
We have an equation
[tex]x+4z-5-3x[/tex]
To find the value of the above equation we have to substitute
[tex]x = 2 \ and \ z = 3x[/tex] in [tex]x+4z-3x[/tex].
Therefore,
[tex]x+4z-5-3x \\= 2+4(3x)--53x\\=2+ 12x -5-3x\\=2+9x-5\\=2+9(2)-5\\=2+18-5\\=20-5\\=15[/tex]
Hence, the equation gives 15 when we substitute x = 2 and z = 3x in the given equation.
Find out more information about substitution here:
https://brainly.com/question/22340165
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