Question

99-3(x+17)=45

12.x-33=3^5

4.x^5=128

3.x^3=375

x^5:8=4

2^x:4=16

tim x

Answer 1

99 - 3(x + 17) = 45

=> 3(x + 17) = 99 - 45

=> 3x + 51 = 54

=> 3x = 54 - 53

=> 3x = 3

=> x = 3 : 3

=> x = 1

vậy_

Answer 2

a,99-3x-51=45

3x=45+51-99

3x=-3

x=-1

b,x⁵:8=4

x⁵=32

x=2

c,3.x³=375

x³=125

x=5

d,12.x-33=3⁵

12x=276

x=23

e,4x⁵=128

x⁵=32

x=2

g,2^x:4=16

2^x=64

x=6

Answer 3

\(12x-33=3^5\)

\(12x-33=243\)

\(12x=243+33\)

\(12x=276\)

\(x=276:12\)

\(x=23\)

Vậy x = 23

\(4.x^5=128\)

\(x^5=128:4\)

\(x^5=32\)

\(x^5=2^5\)

\(\Rightarrow x=2\)

Vậy x = 2

Answer 4

Bài ở trên làm rồi

\(12\cdot x-33=3^5\)

\(12\cdot x=3^5+33\)

\(12\cdot x=243+33\)

\(12\cdot x=276\)

\(x=23\)

\(4\cdot x^5=128\)

\(x^5=\frac{128}{4}\)

\(x^5=32\)

\(x=2\)

\(3\cdot x^3=375\)

\(x^3=\frac{375}{3}\Rightarrow x^3=125\)

\(\Rightarrow x=5\)

\(\frac{x^5}{8}=4\)

\(\Rightarrow x^5=4\cdot8\)

\(\Rightarrow x^5=32\Rightarrow x=2\)

Cuối tự làm nhé

Answer 5

99 - 3(x + 17) = 45

=> 3(x + 17) = 99 - 45

=> 3x + 51 = 54

=> 3x = 54 - 53

=> 3x = 3

=> x = 3 : 3

=> x = 1