\(x:10=80\)
tính nhanh :
50 x 10 + 50 x 10
10 x 20 + 80 x 10
50 x 10 + 50 x 10
= (50 + 50) x 10
= 100 x 10
= 1000
10 x 20 + 80 x 10
= (20 + 80) x 10
= 100 x 10
= 1000
\(50.10+50.10\)
\(=500+500\)
\(=1000\)
\(10.20+80.10\)
\(=10.\left(20+80\right)\)
\(=10.100\)
\(=1000\)
50 x 10 + 50 x 10
= 500 + 500
= 1000
10 x 20 + 80 x 10
= 10 x ( 20 + 80 )
=10 x 100
= 1000
Tính nhanh
1,6 x 12 + 8 x 4,1 - 10 : 10/8 + 8/10 x 13 + 80% x 32
x+ 10 = 80 -10
x + 10 = 80 - 10
x + 10 = 70
x = 70 - 10
x = 60
x + 10 = 80 - 10
x + 10 = 70
x = 70 - 10
x = 60
1-4+7-10+ ... -x=-75
-8+13-...+x=250
2-6+10-14+...-x=-80
x + 10 = 10 + 80
x + 10 = 10 + 80
x + 10 = 90
x = 90 - 10
x = 80
x + 10 = 10 + 80
x + 10 = 90
x = 90 - 10
x = 80
ai tk mk mk tk lại
x + 10 = 80 tìm x
\(x+10=80\)
\(\Rightarrow x=80-10\)
\(\Rightarrow x=70\)
\(x+10=80\)
\(\Rightarrow x=80-10\)
\(\Rightarrow x=70\)
Chcus bạn học tốt nha
(10-x)^2 - x (x+80) với x = 0.98
\(\left(10-x\right)^2-x\left(x+80\right)=10^2-2.10.x+x^2-x^2-80x=100-100x\)
Thay x = 0.98
= 100 - 100x = 100 - 100 . 0,98 = 2
tìm x:
X x 10 = 80
X x 10 = 80
X= 80 : 10
X= 8
k cho mình nha
(x+2)/88+(x+10)/80+(x+6)/84+(x+85)/5
x+80-10=90
x=?
x + 80 - 10 = 90
x = 90 - ( 80 - 10 )
x = 90 - 70
x = 20
x + 80 - 10 = 90
x = 90 - ( 80 - 10 )
x = 90 - 70
x = 20
tink nhé