10x=x 9x=0 x=0
If: 10X = 2.7 then X = 2.7/10 => 0.27
11x = 10x-19 Subtact 10x fromboth sides:- x = -19
x - 10x = 9x, so 9x + 3 = 0, so 9x = -3 so x = -1/3
Given: x2 + 10x - 16 Let: x2 + 10x - 16 = 0 x2 + 10x - 16 = 0 ∴ x2 + 10x + 25 = 16 + 25 ∴ (x + 5)2 = 41 ∴ x = -5 ± √41 ∴ x2 + 10x - 16 = (x + 5 + √41)(x + 5 - √41)
(x+5)^2 and therefore x = -5
8 = 10x/(10 + x) Multiply both sides by (10 + x) to give: 8*(10+x) = 10x Simplify: 80 + 8x = 10x Subtract 8x from both sides: 80 = 2x Divide both sides by 2: 40 = x
Rearrange: x2 - 10x + 25 = 0ie (x - 5)(x - 5) = 0x = 5Check: x2 = 25; 10x - 25 = 50 - 25 = 25. Job done
10x+7=(-3) 10x=(-10) x=(-1)ans
x/5 = 2/10 Cross multiply to solve for x. 10x=10. x=1.
11x - 7 = 5 - xSubtract 'x' from each side:10x - 7 = 5Add 7 to each side:10x = 12Divide each side by 10 :x = 1.2
3x plus 10x - 7With out knowing what ' x ' actually is.. it will reduce down to.3x + 10 x - 7=13x - 7