Помогите решить выражения

90-7*3-24:5*5=

50-3*8-2*7-19=

(7*3+33) - 3*6:2=

3 * (12-8) : 2+3*9-33=

50-1565*3+16:8*5=

60 - (13+2) : 5-6*3+11=

90-7*3-24:5*5=45

1. 7*3=21

2. 24:5=4,8

3. 4,8*5=24

4. 90-21=69

5. 69-24=45

50-3*8-2*7-13-11=-12

1. 3*8=24

2. 2*7=14

3. 50-24=26

4. 26-14=12

5. 12-13=-1

6. - 1-11=-12

(7*3+33) - 3*6:2=45

1. 7*3=21

2. 21+33=54

3. 3*6=18

4. 18:2=9

5. 54-9=45

3 * (12-8) : 2+3*9-33=0

1. 12-8=4

2. 3-4=12

3. 12:2=6

4. 3*9=27

5. 6+27=33

6. 33-33=0

50-15:5*3+16:8*5=51

1. 15:5=3

2. 3*3=9

3. 16:8=2

4. 2*5=10

5. 50-9=41

6. 41+10=51

60 - (13+2) : 5-6*3+11=50

1. 13+2=15

2. 15:5=3

3. 6*3=18

4. 60-3=57

5. 57-18=39

6. 39+11=50