3x+ 60 = 180

180-60= 120

3x=120

120/3= 40

x=40

<1= 140 <2= 40

x+y=180

and one is 60 degrees more than twice the other, so

x=60+2y (doesn’t matter which one you choose as x or y)

Now, we have two equation to work with (that’s what we want)

x+y=180

x=60+2y

As you can see that the second equation has the value of x because x=60+2y

Then we can use substitution to find the value of y

Change the “x” in the first equation into 60+2y, we have

60+2y+y=180

60+3y=180

3y=180-60

3y=120

===>y=120/3

===>y=40

Now we have to find the value of “x”, use the second equation and plug in the 40

x=60+2(40)

x=60+80

x=140

The answer is

x=140 degrees

y=40 degrees

Let one angle be x, so the other, which is 60deg more than

twice the other, will be 2x + 60, so,

x + 2x + 60 = 180, so,

3x + 60 =180,so,

3x = 120, so,

x = 40, and the Angles are 40 deg, and 2×40+60, =140deg.

Hope this helps, Twiggy.

a=60+2b

a+b=180

so we have:

a+b=180

60+2b+b=180

60+3b=180

3b=180-60

3b=120

b=120/3

b=40

did you understand?