Idont understand ! what's the answer?

To put this into words, the equation is saying that one less than 4x + 3x is equal to 6.

First simplify by combining like terms. We see there is a 4x and 3x, which means that they are compatible with each other. The equation will then look like . If one less than 7x is 6, then this can also mean one more than 6 is equal to 7x. So add 1 to both sides:  

--> , which means that x = 1.

Checking your work:

Now that we know the value of x, substitute that for x in the equation like this:

-->

--->

So you know it's true that x = 1. Hope this was helpful.

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value