1) 1200 + x2 = 2600Решение:1200 + x2 = 2600x2 = 2600 - 1200x2 = 1400x = 1400 / 2x = 700
2) x-2600:2 = 1200Решение:x-2600:2 = 1200x -1300 = 1200x = 1200 + 1300x = 2500
3) 2600 - x = 12002Решение:2600 - x = 120022600 - x = 2400-x = 2400 - 2600-x = -200x = -(-200)x = 200
1) 1200 + x2 = 2600
Решение:
1200 + x2 = 2600
x2 = 2600 - 1200
x2 = 1400
x = 1400 / 2
x = 700
2) x-2600:2 = 1200
Решение:
x-2600:2 = 1200
x -1300 = 1200
x = 1200 + 1300
x = 2500
3) 2600 - x = 12002
Решение:
2600 - x = 12002
2600 - x = 2400
-x = 2400 - 2600
-x = -200
x = -(-200)
x = 200