Question

[18] Evaluate the expression when x=4, and y =3 3x - 4y​

Answer 1

Answer: The value of the expression at x = -2 and y = 3 will be negative 18.

What is the value of the expression?

When the relevant factors and natural laws of a mathematical model are given values, the outcome of the calculation it describes is the expression's outcome.

PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.

The expression is given below.

⇒ 3x - 4y

The value of the expression at x = -2 and y = 3 will be

⇒ 3(-2) - 4(3)

⇒ - 6 - 12

⇒ - 18

The value of the expression at x = -2 and y = 3 will be negative 18.

Explanation:

Answer 2

Given:-

• x = 4
• y = 3

Solution:-

• 
  `\tt{3 x - 4 y}`

`\:`

• 
  `\tt{3( 4 ) - 4( 3 )}`

`\:`

• 
  `\tt{12 - 12 }`

`\:`

• 
  `\underline{ \boxed{ \tt{ \red {\: 0\: }}}}`

`\:`

hope it helps! :)