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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: Bài 1: Tìm x, biết: a) 5x + x = 39-3^11:3^9 h) 315+ (146 –x) = 401 b) 7x- x = 5^21:5^19 +3.2^2 – 7^0 k) (6x – 39): 3 = 201 c) 7x-2x = 6

Home/ Toán Lớp 6: Bài 1: Tìm x, biết: a) 5x + x = 39-3^11:3^9 h) 315+ (146 –x) = 401 b) 7x- x = 5^21:5^19 +3.2^2 – 7^0 k) (6x – 39): 3 = 201 c) 7x-2x = 6

Toán Lớp 6: Bài 1: Tìm x, biết: a) 5x + x = 39-3^11:3^9 h) 315+ (146 –x) = 401 b) 7x- x = 5^21:5^19 +3.2^2 – 7^0 k) (6x – 39): 3 = 201 c) 7x-2x = 6

Tháng Mười Hai 10, 2022 Toán học 1 Comment 0 views

Toán Lớp 6: Bài 1: Tìm x, biết:
a) 5x + x = 39-3^11:3^9
h) 315+ (146 –x) = 401
b) 7x- x = 5^21:5^19 +3.2^2 – 7^0
k) (6x – 39): 3 = 201
c) 7x-2x = 6^17: 6^15 + 44:11
l) 23 + 3x = 5^6:5^3
d) 0:x=0
h) 9^x-1 = 9
e) 3x = 9
i) x^4 = 16
f) 4^x = 64
g) 2^x = 16
j) 2^x:2^5 = 1

Comments ( 1 )

  1. hoquyly
    hoquyly
    10 Tháng Mười Hai, 2022 at 11:47 sáng
    Reply
    a)5x+x=39-3^11:3^9$\\$<=>6x=39-3^2$\\$<=>6x=39-9$\\$<=>6x=30$\\$<=>x=5
    h)315+(146-x)=401$\\$<=>146-x=86$\\$<=>x=60
    b)7x-x=5^21:5^19+3.2^2-7^0$\\$<=>6x=5^2+3.4-1$\\$<=>6x=25+12-1$\\$<=>6x=36$\\$<=>x=6
    k)(6x-39):3=201$\\$<=>6x-39=603$\\$<=>6x=642$\\$<=>x=107
    c)7x-2x=6^17:6^15+44:11$\\$<=>5x=6^2+4$\\$<=>5x=36+4$\\$<=>5x=40$\\$x=8
    l)23+3x=5^6:5^3$\\$<=>23+3x=5^3$\\$<=>23+3x=125$\\$<=>3x=102$\\$<=>x=34
    d)0:x=0$\\$<=>x=0
    h)9^{x-1}=9$\\$<=>x-1=1$\\$<=>x=2
    e)3x=9$\\$<=>x=3
    i)x^4=16$\\$<=>x^4=2^4$\\$<=>x=2
    f)4^x=64$\\$<=>4^x=4^3$\\$<=>x=3
    g)2^x=16$\\$<=>2^x=2^4$\\$<=>x=4
    j)2^x:2^5=1$\\$<=>2^{x-5}=2^0$\\$<=>x-5=0$\\$<=>x=5

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222-9+11+12:2*14+14 = ? ( )

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