Răspuns:
Explicație pas cu pas:
800+[3948-2×(200-w÷7)]÷5=1000
[3948-2×(200-w÷7)]÷5 = 1000 - 800 = 200
3948-2×(200-w÷7) = 200 x 5 = 1000
2×(200-w÷7) = 3948 - 1000 = 2948
200-w÷7 = 2948 : 2 = 1474
w÷7 = 200 - 1474 = -1274
w = -1274 x 7 = 8918
800+[3 948-2×(2000-w÷7)]÷5=1000
[3 948-2×(2000-w÷7)]÷5=1000-800
[3 948-2×(2000-w÷7)]÷5=200
3 948-2×(2000-w÷7)=200×5
3 948-2×(2000-w÷7)=1 000
2×(2000-w÷7)= 3 948 - 1 000
2×(2000-w÷7)= 2 948
2000-w÷7= 2 948:2
2000-w÷7=1474
w÷7=2000-1474
w÷7=526
w=526×7
w=3 682