3^7:3^3-7x=2^3.2^2
=>3^4-7x=2^5
=>7x=3^4-2^5
=>7x=49
=>x=49:7
x=7
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Các câu hỏi tương tự
Bài 1:Tìm x
a) 5x+x=39-3^11:3^9
b) 7x-x=5^21:5^19+3.2^2-7^0
c) 7x-2x =6^17:6^15+44:11
Bài 4:tìm x
a.7x-x=5^21:5^19+3.2^2.7
b.11x-7x+3^4:3^3=5^4+2x
c.75-5.(x-3)^3=700
d.3.(2x-1)^2=75
e.3^x+3^x+2=270
f.3^x-3-3^2=2.3^2
Cảm ơn các bản !
tìm x, biết:
a, 5x + x = 39-311:39
b, 7x - x = 521:519+3.22-70
c, 7x - 2x = 617:615+44:11
Tìm x, biết
a) 7x – x = 521 : 519 + 3.22 - 7^0
b) 1+2+3+….+x = 55
c) (2x + 5) .|-7| = 73
d) 4x+12=3(x-7)
Tìm x:
7x - x =521: 519+3.22- 707x -2x=617: 615 + 44:115x + x=39- 311:39Hepl me
a , 4x + 2x = 68 - 219 : 216
b , 5x + x = 39 - 311 : 39
c , 7x - x = 521 : 519 + 3.22 - 70
d , 7x - 2x = 617 : 615 + 44 : 11
timx
a. 5x+3x bang 3 6 chia 3 3.4+12
b. 4x+2x bang 68-2 19 chia 2 16
c. 5x+x bang 39-3 11 chia 3 9
d. 7x-x bang 5 21 chia 5 19 +3.2 2-7 0
x-3=7^5/7^3+2^3.2^2
c)2x-49=5.3^2
d)2^x=32
e)4^x:16=4
f)(x-1)^3=8
g)7x-x=5^21:5^19+3.2^2-7^0
h)64<x^3<bằng 125
i)25<bằng 5^x<bằng625