Find the measure of ∠a if

∠a =
3/2x + 20
∠b =
7/2x + 20
∠c =
5/2x + 40
∠d =
3/2x + 10

a) 55°
b) 65°
c) 76°
d) 104°

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation:

false

step-by-step explanation:

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point