Hi, I need some help on this question

Write an equation to determine the measures of both angles.
Determine the measures of both angles. Show your work.

∠1 =20x+21 and the measure of ∠2+30x - 29

A: Write an equation to determine the measures of both angles.
B: Determine the measures of both angles. Show your work.

A : 20x+21=30x-29

B : m<1 = 121   m<2 = 121

Step-by-step explanation:

Original equation

Add +29 to both sides

Subtract -20x

Divide by 10

Checking your work and doing substitution

20(5)+21

100+21

121

30(5)-29

150-29

121

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

my answer is$ 12

step-by-step explanation:

because 15 -2=12