136a 1. 7a-3 2. 5a+2b-5c 3. 2x+8y-1 4. 2.1m+1.6n 5. x-3/2y 6. 5a제곱-9b제곱 136b 1. -x+4 2. 6x-3y 3. 7x제곱-x-5 4. 6z 5. 5/2a-4b 6. -a-5/4b-7/2c
당신은 어느 그룹입니까?