Question

If the expression is 3x+1 is equal to -7 for the some value of x, Then what is the value of the expression 6x+5 for the same value of X? Show the work that leads to your solution

Answer 1

3x+1=-7
3x = -8 subtract 1 from both sides to separate the x
X= -8/3 divide both sides by 3 to find the value of x


6(-8/3) + 5 replace x with the value of x that you found in the other equation
16 + 5 multiply 6 * (-8/3)
21 add 16+5

Answer 2

remember, you can do anything to an equation as long as you do it to both sides
3x+1=-7
minus 1 both sides
3x+1-1=-7-1
3x+0=-8
3x=-8
divide both sides by 3
$\frac{3x}{3}=\frac{-8}{3}$
$\frac{3}{3}x=\frac{-8}{3}$
$1x=\frac{-8}{3}$
$x=\frac{-8}{3}$

ok for 6x+5

6x+5
$6(\frac{-8}{3})+5=$
$\frac{-48}{3}+5=$
$-16+5=$
$-11$





$x=\frac{-8}{3}$ and $6x+5=-11 \space\ for \space\ x=\frac{-8}{3}$