Question

3y- |2x + 1| при x = - 7 , y = 5​

Answer 1

3•5-(2•(-7)+1)=15-(-13)=28

Answer 2

To find the value of the expression 3y - |2x + 1| when x = -7 and y = 5, we substitute the given values into the expression:

3y - |2x + 1| = 3(5) - |2(-7) + 1|

Now, let's calculate the values step by step:

1. Calculate the inner expression inside the absolute value: 2(-7) + 1 = -14 + 1 = -13

2. Take the absolute value of the result from step 1: | -13 | = 13

3. Now, substitute the absolute value result into the original expression: 3(5) - 13 = 15 - 13 = 2

So, when x = -7 and y = 5, the value of the expression 3y - |2x + 1| is 2.