Решите уравнение: 1) x+ 2 7/16=5 3/16; 2) 4 5/14- (x-7 3/14)=2 9/14.

Question

Решите уравнение: 1) x+ 2 7/16=5 3/16; 2) 4 5/14- (x-7 3/14)=2 9/14.

Answer 1

1) x + 7/8 = 15/16
x = 15/16 - 7/8
x = 15-14/16
x = 1/16
2) 2 × 5/7 × (x - 3/2) = 9/7
10/7 - x + 3/2 = 9/7
20+21/14 - x = 9/7
41/14 - x = 9/7
-x = 9/7 - 42/14
-x = 18-41/14
-x = -23/14
x = 23/14