Advertisements
Advertisements
प्रश्न
Find x: (7x – 5) – 4(2 + 5x) = 10(2 – x)
उत्तर
Expanding the brackets,
7x – 5 – 4 × 2 – 4 × 5x = 10 × 2 + 10 × (– x)
7x – 5 – 8 – 20x = 20 – 10x
7x – 13 – 20x = 20 – 10x
Transposing 10x and – 13, we get
7x – 13 – 20x + 10x = 20
7x – 20x + 10x = 20 + 13 ......(Simplifying)
7x – 10x = 33
– 3x = 33
3x = – 33
x = `(-33)/3` = – 11
x = – 11
APPEARS IN
संबंधित प्रश्न
The value of x in the equation x + 5 = 12 is _________
Find x and m: `("m" + 9)/(3"m" + 15) = 5/3`
The equation y + 1 = 0 is true only when y is
Find the perimeter of a triangle whose sides are x + 3y, 2x + y, x – y
How much smaller is 2ab + 4b – c than 5ab – 3b + 2c
If ‘g’ is equal to 300 what is the value of ‘g – 1’ and ‘g + 1’?
A piece of wire is ‘12s’ cm long. What will be the length of the side, if it is formed as an equilateral triangle
9x – ______ = –21 has the solution (–2)
The equations x + 1 = 0 and 2x + 2 = 0 have the same solution.
On my last birthday, I weighed 40 kg. If I put on m kg of weight after a year, what is my present weight?
