15 (y+9)-7y; 22 (y+4)-19y; 25 (4-y)-76;

Question

15 (y+9)-7y; 22 (y+4)-19y; 25 (4-y)-76;

Answer 1

15(y+9)-7y=15y+135-7y=8y+135
22(y+4)-19y=22y+88-19y=3y+88
25(4-y)-76=100-25y-76=24-25y

Comments

Спасибо