I’m confused can someone help me

1. This equation of m<a + m<c = m<b - m<c wouldn't be correct unless the measure of angle c was 0. So technically there is no statment to make that equation true.

2. Angle addition postulate.

3. Transitive property of equality.  

4. Substitution property.

Step-by-step explanation:

You might want to recheck and see if these are the correct answer they seem to be to me. Im only in 10th grade so i kind of just learned this.

If you have any questions feel free to ask in the comments - Mark

Also when you have the chance please mark me brainliest.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

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