9 - x = - 45 + 24 - 2x => x = - 45 - 9 + 24 = - 30
9 - x = - 45 + 24 - 2x => x = - 45 - 9 + 24 = - 30
1. | 4-2x | . 1/3 = 1/3
2. (-3)² : | x+(-1) | = (-3)
3. | 3/2 -x | + (-4/5) = -14/5
4. (-4/3) - | 2x + (-1) | = -7/3
5. -9 . | 36 - x/2 | = (-54)
6. 0,75 - | (-x) + 1/3 | = 0,25
7. (-6/5) + | x-9 |= (-6/5)
8. (-4) . | 3x - 1/5 | = 12
5+2x/3+4/5+6/7+8/9=x/a+2/3+4/5+5/8+7/9 (toán máy tính cầm tay thcs lớp 6)
1 . 4(x+41)=400
2. 11(x-9)=77
3. 5(x-9)=350
4. 2x-49=3.32
5. 200-(2x+6)=43
Giups mk câu này nhé !
4^5 x 9 ^4 - 2x 6^9 / 2^ 10 x 3^8 +6 ^ 8 x 20
1,x=3x2
2,(x+5)(x-3)-(x-30)=0
3,(2x-6)(x+4)+2(2x-6)=0
4,(2x-5)(x+9)+6x-15=0
3,(2x-5)(x+6)+8x-20=0
2.(x-5)-3.(x-4)=-6+15:9-3)
(x+7).(x-9)=0
/2x-5/-7=22
(/2x/-5)-7=22
tìm x,y thuộc z biết:x+y=x.y
Tìm x
a)7/x+4/5×9+4/9×13+...+4/41×45=29/93
b)x+2/1×3+2/3×5+...+2/49×51=5/17
c)1/4-1/2×4-1/4×6-...-1/2x(2x+2)=23/176
2x/6 và x/3 ( x thuộc Z)
4/9 = x + 5/-27
|2x-5|-7=22
15-|2x+3|=8
(2x+4)(x^2+9)=0
2(x-5)-3(x-4)=-6+15.(-3)