Question

3(x+2)+5x-7
Simplify the expressions and find the value of x is equal to 2

Answer 1

The expression is $8x-1$.

The value at x=2 is 15.

Step-by-step explanation:

Given : Expression $3(x+2)+5x-7$

To find : Simplify the expressions and find the value of x is equal to 2 ?

Solution :

Writ the expression as,

$f(x)=3(x+2)+5x-7$

Solve,

$f(x)=3x+6+5x-7$

$f(x)=8x-1$

Substitute the value of x=2,

$f(2)=8(2)-1$

$f(2)=16-1$

$f(2)=15$

#Learn more

Simplify the expression and find the value of x+7+4(x-5) if x=2

https://brainly.in/question/7025948

Answer 2

In the above question, it is given that,

The given expression is 3(x+2)+5x-7.

We need to simplify the expression and find the value when x =2.

Thus, simplifying the expression we get,

$3(x+2)+5x-7\\3x+6+5x-7\\3x+5x+6-7\\8x-1$

When we add two value with sign (+) and (-) we do subtraction and given the sign of highest value.

Substituting the value of 2 we get,

$8(2)-1\\16-1\\15$

Therefore we get the value as 15.

The simplify expression is 8x-1

Note:-3(x+2) + 5x-7 Simplify the expression and find the value if x is equal to 2​