плизззз помогите !!!
1) 6х+х-35+=21
2) 17y+14y=279
3) 5y+9y+32=200

1) 6х + х - 35 = 21; 7x = 21 + 35; x = 3 + 5; x = 8.

2) 17y + 14y = 279; 31y = 279; y = 9;

3) 5y+9y+32=200; 14y = 200 - 32; 14y = 168; y = 12.