a) \(2^{x+2}-2^2=96\)

 <=> \(2^x.2^2-2^x=96\)

 <=> \(2^x\left(4-1\right)=96\)

<=> \(3.2^x=96\)

<=> \(2^x=32\)

<=> \(2^x=2^5\)

<=> x = 5 

b, \(x-\left(\frac{50x}{100}+\frac{25x}{200}\right)=11\frac{1}{4}\)

\(\Rightarrow x-\left(\frac{1x}{2}+\frac{1x}{8}\right)=\frac{45}{4}\)

\(\Rightarrow x-\left(\frac{4x}{8}+\frac{1x}{8}\right)=\frac{45}{4}\)

\(\Rightarrow x-\frac{5x}{8}=\frac{45}{4}\)

\(\Rightarrow\frac{8x}{8}-\frac{5x}{8}=\frac{45}{4}\)

\(\Rightarrow\frac{3x}{8}=\frac{45}{4}\Rightarrow x=\frac{45}{4}\div\frac{3}{8}=30\)

Vậy x = 30 

VL, đây mà là toán lớp 5 á ??

a) -12.(x-5)+7.(3-x)=5

-12.x + 60 + 21 - 7.x = 5

( -12.x -7.x ) + ( 60 + 21 ) = 5

-19.x + 81 = 5

-19.x = 5 - 81

-19.x = -76

x = -76 : (-19)

x = 4

b) 30.(x+2)-6(x-5)-25x= 100

30x + 60 - 6x + 30 -25x = 100

( 30x - 6x -25x ) + ( 60 + 30 ) = 100

-1x + 90 = 100

-1x = 100 - 90

-1x = 10

x = 10 : ( -1 )

x = -10

a)x=30

b)x=65

a) x-\(\left(\frac{50x}{100}+\frac{25x}{200}\right)\)=\(11\frac{1}{4}\)

<=>x - \(\frac{1}{2}x-\frac{1}{8}x\)=\(\frac{11.4+1}{4}\)

<=>\(\frac{3}{8}x=\frac{45}{4}\)

<=>x=\(\frac{45}{4}:\frac{3}{8}\)

<=>x=30

Vậy x=30

c) (x-5).\(\frac{30}{100}\)=\(\frac{20x}{100}+5\)

<=>(x-5).\(\frac{3}{10}\)=\(\frac{x}{5}\)+5

<=>\(\frac{3x}{10}-\frac{15}{10}=\frac{x}{5}+5\)

<=>\(\frac{3x}{10}-\frac{x}{5}=5+\frac{15}{10}\)

<=>\(\frac{x}{10}=\frac{13}{2}\)

<=>x=\(\frac{13.10}{2}\)

<=>x=65

Vậy: x=65

<=>\(x+x-\frac{25x}{100}-\frac{25}{100}=60\)

<=>\(2x-\frac{50x}{100}=60\)

<=>\(\frac{150x}{100}=60\)

<=> 150x=6000

<=> x=40

x=24 nên x+1=25

C=x^4-x^3(x+1)+x^2(x+1)-x(x+1)+30

=x^4-x^4-x^3+x^3+x^2-x^2-x+30

=-x+30

=30-24

=6

x=24

=> x+1=25

=> M=x¹⁰⁰-(x+1)x⁹⁹+(x+1)x⁹⁸-(x+1)x⁹⁷+(x+1)x⁹⁶-...-(x+1)x³+(x+1)x²-(x+1)x+25

       =x¹⁰⁰-x¹⁰⁰-x⁹⁹+x⁹⁹+x⁹⁸-x⁹⁸-x⁹⁷+x⁹⁷+x⁹⁶-...-x⁴-x³+x³+x²-x²-x+25

       =-x+25

       =-24+25

       =1

Vậy M=1.

x-(60-x)=25x/100+25x/100

x-60+x=25x+25x/100

x-60+x=x(25+25)/100

x-60+x=x.50/100

x-60+x=x.50/50.2

x-60+x=x/2

.....

tới đây thui, mình ko biết làm nữa

ko biết là đúng hay sai đâu nhoa

uk

tui o bít nhưng ai kb vs tui o