1/3а + b²
1. a = 6 ; b = -2 1/3 * 6 + ( -2)² = 6/3 + 4 = 2 + 4 = 6
2. а = 3/5 ; b = - 1 1/3 * 3/5 + (-1)² = 1/5 + 1 = 1 1/5
3. a = -9 ; b = 3 1/3 * (-9) + 3² = -3 + 9 = 6
4. а = -3 ; b = 4 1/3 * (-3) + 4² = -1 + 16 = 15
18000+x-300=20000
x=20000-18000+300
x=2300
2)900000-800-x=100000
-x=100000-900000+800
-x=-720000
x=720000
3)75900-y=45000+5000
-y=50000-75900
y=25900