Question

Решить уравнения ; ( 1600 + t ) : 80 =60 ; 2000:f-670=1330 ; 1300 - (d - 678) = 400

Answer 1

(1600 + t) : 80 = 60
1600 + t = 60 * 80
1600 + t = 4800
t = 4800 - 1600
t = 3200
2000 : f - 670 = 1330
2000 : f = 1330 + 670
2000 : f = 2000
f = 2000 : 2000
f = 1
1300 - (d - 678) = 400
d - 678 = 1300 - 400
d - 678 = 900
d = 900 + 678
d = 1578