a) (-4).(x+41)=400
=> x + 41 = 400 : ( -4)
=> x + 41 = -100
=> x = -100 - 41
=> x = -141
b) 9-25=(7-x)-(25+7)
=> -16 = ( 7 - x ) - 32
=> 7 - x = 32 - ( -16 )
=> 7 - x = 48
=> x = 7 - 48
=> x = -41
Các câu hỏi tương tự
tìm x:
a) 2x : 25 = 4.
b) 4(x + 41) = 400
c) (x + 7) – 25 = 13
1 tháng 10 2021 lúc 21:37
Bài3:Tìm x:a) 71 – (33 + x) 26b) (x + 73) – 26 76c) 45 – (x + 9) 6d) 89 – (73 – x) 20e) 4(x + 41) 400f) 11(x – 9) 77g) (x + 7) – 25 13h) 198 – (x + 4) 120i) 5(x – 9) 350j) 2x – 49 5.32k) 25 + 3(x – 8) 106l) 32(x + 4) – 52 5.22m) 200 – (2x + 6) 43n) 2(x- 51) 2.23 + 20o) 450 : (x – 19) 50p) 4(x – 3) 72 – 110q) 156 – (x+ 61) 82r) (x-35) -120 0
Đọc tiếp
Bài3:Tìm x:
a) 71 – (33 + x) = 26 b) (x + 73) – 26 = 76 c) 45 – (x + 9) = 6 d) 89 – (73 – x) = 20 e) 4(x + 41) = 400 f) 11(x – 9) = 77 | g) (x + 7) – 25 = 13 h) 198 – (x + 4) = 120 i) 5(x – 9) = 350 j) 2x – 49 = 5.32 k) 25 + 3(x – 8) = 106 l) 32(x + 4) – 52 = 5.22 | m) 200 – (2x + 6) = 43 n) 2(x- 51) = 2.23 + 20 o) 450 : (x – 19) = 50 p) 4(x – 3) = 72 – 110 q) 156 – (x+ 61) = 82 r) (x-35) -120 = 0 |
tìm số nguyên x, biết
a)9-25=(7-x)-(25+7)
b) x+4=8x-10
Tìm số nguyên x , biết :
a) 9-25=(7-x)-(25+7)
b)-6x=18
c)x.2=4
a)15 - x = 7 - (-2)
b) 11 - ( 15 + 11 ) = x - (25 - 9 )
c) ( 7 - x ) - ( 25 + 7 ) =9 - 25
A) 9 - 25 = (7 - x) - (25 + 7)
B) x - (17 - x) = x - 7
Tìm số nguyên x, biết :
a) 11 - (15 + 21) = x -(25 - 9)
b) 9 - 25 = (7 - x) - (25 + 7)
5) 6x – 5 = 3 + 4x 6) x – (17 – x) = x – 7
7) 9 – 25 = (7 – x) – ( 25 + 7) 8) 10 – 2.(4 – 3x) = - 4
9) (-12)2
.x = 56 + 10. 13x 10) 2x2
– 1 = 49
Tìm x:
\(\dfrac{39}{41}-\dfrac{25}{x}=\dfrac{-47}{41}.\dfrac{16}{7}\)