Question

800+[3948-2×(200-w÷7)]÷5=1000 PLS prin metoda mersului invers

Answer 1

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

Answer 2

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