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Bài làm
\(\left(24-\frac{12}{3}\right)x4\)
= \(\left(\frac{72}{3}-\frac{12}{3}\right)x4\)
= \(\frac{60}{3}x4\)
= \(20x4\)
= \(80\)
\(24-\frac{12}{3}x4\)
= \(24-\frac{48}{3}\)
= \(24-16\)
= \(8\)
# Chúc bạn học tốt #
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B,B,B,B,B,B,B,B,B,B,B,B,B,B,B VA B
**** CHO MK NHA LAN TRUOC BAN CHUA **** MK DAU HUHUHUHU...
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a, 5x + 3 + 7 = 20
5x = 20 – 7 – 3
5x = 10
x = 2
b, 12 – 3 x ( x + 1 ) = 3
3 x ( x + 1 ) = 12 – 3
3 x ( x + 1 ) = 9
( x + 1 ) = 9 : 3
( x + 1 ) = 3
x = 3 – 1
x = 2
đề bài là tìm x hả bạn??
a) 5x = 20 - 7 - 3
=> 5x = 10
=> x = 10 : 5
=> x = 2 Vậy ...
b) 3(x+1) = 12 - 3
=> 3(x+1) = 9
=> x+1 = 3
=> x = 2
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1/5 + 3/12 - 3/4 = 5/60 + 15/60 - 15/60 = 5/60 = 1/12
28/17 x 68/14 = 14x2x17x4/17x14 = 2x4 = 8
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trả lời :
thì sao???
^HT^
TL:
Thì sao
HT