Решите уравнение (1-7/10)х=2 1/4, (1/4+1/5)х=1 4/5

Question

Решите уравнение (1-7/10)х=2 1/4, (1/4+1/5)х=1 4/5

Answer 1

(1-7/10)х=2 1/4
х=2 1/4 : (1-7/10)
х=9/4 : (3/10)
х=2.25 : 0.3
х=7.5

(1/4+1/5)х=1 4/5
(5/20+4/20)х=1 4/5
9/20х=1 4/5
х=9/20 : 9/5
х=0.45 : 1.8
х=0.25