5. x+3.10-3.x+x=45
5.x+30-3.x+x.1=45
x.(5-3+1)=45-30
x.3=15
x=15:3
x=5
Dung thi k de ung ho minh nha!!!
\(5.x+3\left(10-x\right)+x=45\)
\(5x+30-3x+x=45\)
\(3x=15\)
\(x=5\)
10. 2 1/2 x 7/5 + {-9/10} x 2/3
11. X + 45% = 2 1/2 -5/3
12. 80% + X = -5/2 + 3/4
13. 4/25 - X =-5/2 + -3/10
tìm x biết:
1) 14- (5-8+3-x) = |-7+10|
2) -19 - ?(3+x-5) = |4-15+2|
3) 45- (x+45-3) = |-7+3|
25 . 15 + 75 . 45
-10 . 25 - 10 . 75 + 10 . 50
3^x-2 - 2^3 = 19
(2 x - 5)^3 = - 64
2(x-1)^2 + 3 = 35
125 - 25 (x + 3) = 50
2(x+ 3) - 1x = 4
Tìm x
5.x+3.(10-x)+x=45
(-15) . x = -45
(+2) . x = -16
(-15) . x = 10.(-40)-5
(-3) . x = 2.(-7)+4
giúp vS
5(x-3) = 70 - 45 =25
x- 3 =25 : 5 = 5 x = 5 +3 =8
x= 5 + 3 = 8
b) 10 + 2 . x = 4^2 =16
2 . x = 16 - 10 = 6
x = 6 : 2 = 3
tìm x. biết
a)3×x + 5= 45
b) 55 - 5 × ( x+ 3) = 10
a) 70 - 5 .(x -3 ) =45
b) 156 - ( x + 61 )+82
c) 10 +2 .x = 4 mũ 5 : 4 mũ 3
d) [(10 - x ).2 +3 ];3 -2=13
