7x - 2x = 617 - 615 + 44 : 11
x( 7 - 2 ) = 617 - 15 + 4
5x = 62 + 4
5x = 36 + 4
5x = 40
x = 40 : 5
x = 8
x=2=-6-17 giải giúp mình nhé
7^x - 2^x = 6^17 : 6^15 + 44 : 11
Tìm x
7 . x - 2. x = 6^17 : 6^15 + 44 : 11
100 - ( 2 . x + 6) . 2 = 4^2
A, 7 x - x = 5^21 : 5^19 + 3 . 2^2 - 7^0
B, 6 x + x = 5^11 : 5^19 + 3^1
C, 7 x - 2x = 6^17 : 6^15 + 44:11
7x - 2x = 6^17 : 6^15 + 44 : 11
9^x-1 = 9
| x - 5 | = 7 - ( - 3 )
| x - 5 | = | - 7 |
| x | - 5 = 3
15 - 2|x| = 13
| x - 2 | = 0
a.7.x-x=5 mũ 21:5 mũ 19+3.2 mũ 2-7 mũ 0
b.7x-2x=6 mũ 17:6 mũ 15+44:11
Tim x
A, 6 x + x = 5^11 : 5^9 +3^1
B, 7 x - x = 5^21 : 5^19 + 3 . 2^2 -7^0
C, 7 x - 2x = 6^17 : 6^15 + 44 : 11
giup minh nhe . Thank you
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
\(7x-2x=6^{17}:6^{15}+44:11\)
\(7x-x=5^{21}:5^{19}+3.2^2-7\)
7x - 2x = 6^17 : 6^15 + 44 : 11
tìm x
