a)\(162:y+216:y=6\)
⇔\(\left(162+216\right):y=6\)
⇔\(378:y=6\)
⇔\(y=63\)
b)\(602:y+123.2=253\)
⇔\(602:y+246=253\)
⇔\(602:y=7\)
⇔\(y=86\)
c)\(8\left(15720-y\right)=51784\)
⇔\(125760-8y=51784\)
⇔\(8y=73976\)
⇔\(y=9247\)
8 x (15720 – y) = 51784
Tìm x
a) 162 : x + 216 : x = 6
b) 602 : x + 123 x 2 = 253
c) 486 : x - 126 :x = 6
d) 725 : x + 175 : x = 5
Tìm x
a) 162 : x + 216 : x = 6
b) 602 : x + 123 x 2 = 253
c) 486 : x - 126 :x = 6
d) 725 : x + 175 : x = 5
( x + 423 ) nhân 6 = 33804
8 nhân ( 15720 - x ) = 51784
tìm y:
a, y x 27 + y x 30 + y x 44 - y = 10500
b, y x 285 + 115 x y = 400
Tìm y:
a, y + 847 x 2 = 1953 - 74 b, y : (7 x 18) = 5839 + 8591
602:x+123*2=253
tìm y:
a) (y + 5) x 2020 = (200 + 5) x 2020
b) y - 45600 = (2019 - 419) x 4 x 25
bài 1: Tính bằng cách thuận tiện nhất
1+4+7+10+13+16+19+22+25+28
bài2:Tìm y:
a)y+253=1420 b)y-2316=902
bài3:Tính:
2754:9= 5089:7= 3675:5= 2010:6=
2754x9= 5089x7= 3675x5= 2010x 6=
