4 years ago

Solve by inspection: X+4=15

Mathematics

2 answers:

amid [387]4 years ago

7 0

x + 4 = 15

- 4 -4

x = 11

You would subtract 4 because you need to isolate the x to get the value of x. You would subtract it to both sides because whatever you do on one side, you have to do it to the other side.

Snowcat [4.5K]4 years ago

7 0

Explanation:

x+4=15

subtract by 4 both sides of an equation.

x+4-4=15-4

then simplify.

15-4=11

x=11 is the final answer.

Hope this helps!

Thanks!

Have a great day!

You might be interested in

Axis of symmetry for f(x) = -2x2 + 20x -42

Ksenya-84 [330]

For the function $f(x)=2x^2 +20x-42$

We can use the formula for the axis of symetry, which is $x= \frac{-b}{2a}$

With the values substituted, we get...

$\frac{-20}{2(-2)} =5$

Therefore the axis of symmetry is $x=5$