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\(3^2\left(x+4\right)-5^2=5\cdot2^2\)
\(9\left(x+4\right)-25=20\)
\(9\left(x+4\right)=20+25\)
\(9\left(x+4\right)=45\)
\(x+4=45:9\)
\(x+4=5\)
\(x=5-4\)
\(x=1\)
= 9 ( x + 4 ) - 25 = 5 . 4
= 9 ( x + 4 ) - 25 = 20
= 9 ( x + 4 ) = 20 + 25
= 9 ( x + 4 ) = 45
x + 4 = 45 : 9
x + 4 = 5
x = 5 - 4
x = 1
a/ 22(x + 32) - 5 = 55 b/ 155 - 10(x+1) = 55
4(x + 32) = 60 10(x + 1) = 100
x + 32 = 60 : 4 x + 1 = 10
x + 32 = 15 x = 10 - 1
x = 15 - 32 x = 9
x = - 17
c/ 5. 22 + (x+3) = 52 53 - 5 (4 + x) = 15
20 + (x+3) = 25 125 - 5(4 +x) = 15
x+ 3 = 5 5(4 + x) = 110
x = 5-3 4 + x= 110 : 2
x = 2 4 + x = 55
x = 51
ủng hộ mk nha !!!! ^_^
32(x+4)-5mũ 2=5x2mu2 32(x+4)-5mu2=5x4 32(X+4)-5\(^2\)=20 32(x+4)=20+5\(^{^2}\) 32(x+4)=20+25 32(x+4)=45 x+4=45:32 x+4=\(\frac{45}{32}\) x=\(\frac{45}{32}\)-4 x=45/32-128/32 x=-83/32
32 ( x + 4 ) - 52 = 5.22
9 ( x + 4 ) - 25 = 5.4
9 ( x + 4 ) - 25 = 20
9 ( x + 4 ) = 20 + 25
9 ( x + 4 ) = 45
x + 4 = 45 : 9
x + 4 = 5
x = 5 + 4
x = 9
\(3^2\left(x+4\right)-5^2=5.2^2\)
\(9\left(x+4\right)-25=5.4\)
\(9\left(x+4\right)-25=20\)
\(9\left(x+4\right)\) \(=20+25\)
\(9\left(x+4\right)\) \(=45\)
\(\left(x+4\right)\) \(=45:9\)
\(\left(x+4\right)\) \(=5\)
\(x\) \(=5-4\)
\(x\) \(=1\)
=> x = 1
mik giải xong rồi
bn ơi ủng hộ k giúp mik nhak moa moa
a, 2(x - 51) = 2.23 + 20
=> 2(x - 51) = 2.8 + 20
=> 2(x - 51) = 16 + 20
=> 2(x - 51) = 36
=> x - 51 = 18
=> x = 69
vậy_
b, 32(x + 4) - 52 = 5.22
=> 9(x + 4) - 25 = 5.4
=> 9x + 36 - 25 = 29
=> 9x + 9 = 29
=> 9x = 20
=> x = 20/9
vậy_
\(a,5x+4^3:16=49\)
\(5x+4=49\)
\(\Rightarrow5x=45\)
\(\Rightarrow x=9\)
\(b,2^x+5.2^x=6.2^7\)
\(2^x\left(1+5\right)=6.2^7\)
\(2^x.6=6.2^7\)
\(\Rightarrow x=7\)
\(3^2.\left(x+4\right)-5^2=5.2^2\)
= \(9.\left(x+4\right)-25=5.4\)
= \(9.\left(x+4\right)-25=20\)
= \(9.\left(x+4\right)=20+25\)
= \(9.\left(x+4\right)=45\)
\(\left(x+4\right)=45:9\)
\(x+4=5\)
\(x=5-4\)
\(x=1\)
32.(x+4)-52=5.22
32.(x+4)=52+(5.22)
32.(x+4)=45
x+4=45:32
x+4=5
x=5-4
x=1
\(3^2\left(x+4\right)-5^2=5.2^2\)
\(9\left(x+4\right)-25=5.4\)
\(9x+36-25=20\)
\(9x+11=20\)
\(9x=20-11\)
\(9x=9\)
\(x=9:9\)
\(x=1\)
\(3^2\left(x+4\right)-5^2=5.2^2\)
\(\Rightarrow9x+36=20+25\)
\(\Rightarrow9x+36=45\)
\(\Rightarrow9x=9\)
\(\Rightarrow x=1\)
Vậy x = 1
2x+4.2x=5.25
2x(1+4)=5.25
2x.5=5.25
=>2x=25
=>x=5
2x + 4 . 2x = 5.25
2x( 1 + 4 ) = 5.25
2x . 5 = 5.25
\(\Rightarrow\)2x = 25
\(\Rightarrow\) x = 5
Vậy x = 5