Question

tìm a và b

a. a - 285 + 85 = 2495

b. 2748 - a + 8593 = 10495

c. b : 7 x 34 = 8704

d. 85 x b : 11 = 425

e. [ a - 4737 ] : x = 5738 -943

Answer 1

a.

a-285+85=2495

=>a=2495+285-85

=>a=2695

b.

2748 - a + 8593 = 10495

=>11341-a=10495

=>a=11341-10495

=>a=846

c.

b:7xx34=8704

=>b:7=256

=>b=1792

d.

85 x b : 11 = 425

=>b:11=5

=>b=55

 

 

 

 

 

Answer 2

a.

a-285+85=2495

=>a=2495+285-85

=>a=2695

b.

2748 - a + 8593 = 10495

=>11341-a=10495

=>a=11341-10495

=>a=846

c.

b:7xx34=8704

=>b:7=256

=>b=1792

d.

85 x b : 11 = 425

=>b:11=5

=>b=55