Решите уравнения: 1) (853+y)-53=900 2) 6t+3t-t=6400

Question

Решите уравнения: 1) (853+y)-53=900 2) 6t+3t-t=6400

Answer 1

1) (853+y)-53=900
853+y=900+53
853+y=953
y=953-853
y=100

2) 6+3-1=8
8t=6400
t=6400÷8
t=800

Answer 2

1) 800+y=900
y=900-800
y=100
2)8t=6400
t=800