x.(9,25+3/4)=55,35

x.(9,25+0,75)=55,35

x.10=55,35

x=55,35:10

x=5,535

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`HT`

các bạn làm xem có đg ko

 => 9,25x + 0,75x=55,35

=> 10x=55,35

=> x = 5,535

Chúc pạn hok tốt

x X 9,25 +75%X x = 55,35

x.9,25+75%.x=55,35
x.9,25+0,75.x=55,35
x.(9,25+0,75)=55,35
x.10=55,35
x=55,35:10
x=5,535

Hok tốt

x.(9,25+3/4)=55,35

x.(9,25+0,75)=55,35

x.10=55,35

x=55,35:10

x=5,535

a: 2,25 giờ x 4+1 giờ 45 phút x 4-90 phút x 4

=2,25 giờ x4+1,75 giờ x 4-1,5 giờ x 4

=(2,25 giờ+1,75 giờ-1,5 giờ) x 4

=2,5 giờ x 4

=10 giờ

b: \(X\times9,25+X\times75\%=55,3\)

=>\(X\times9,25+X\times0,75=55,3\)

=>\(X\times\left(9,25+0,75\right)=55,3\)

=>\(X\times10=55,3\)

=>X=55,3:10=5,53

x*9,25+75%*x=55,35

x*9,25+0,75*x=55,35

x*(9,25+0,75)=55,35

x*10=55,35

x=55,35:10

x=5,535

1,15*2+2,3*1,15*6=1,15*(2+2,3*6)=1,15*(2+13,8)=1,15*15,8=18,17

b) \(x\cdot9,25+75\%\cdot x=55,35\)

\(\Leftrightarrow x\cdot9,25+0,75\cdot x=55,35\)

\(\Leftrightarrow x\left(9,25+0,75\right)=55,35\)

\(\Leftrightarrow10x=55,35\)

\(\Leftrightarrow x=5,535\)

x=99 hoặc x=-99

các bạn trả lời sai hết rồi 

tick nha

[x-9,25-4]:[x-9,25-4]=1

[x-9,25-4]=1

x-9,25=1+4

x-9,25=5

x=5+9,25

x=14,25

tick nha