Show:
Algebra
Multiplication
Addition
100

3a+4a

7a

100

1x1

1

100

1+4

5

200

14a+12a

26a

200

4x9

36

200

25+25

50

300

a+2+1-a

3

300

15x5

75

300

1450+1450

1900

400

A+1xA+1

4

400

1+Ax3-1

3a

400

10x{110-10}

1000

500

B+A+1B+2A

2B+3A

500

200A+300-Ax200

300

500

10000x5{14000-14-14x1000}

700000