Linear Equations

The statement ‘on adding 10 in a number, the number becomes 20’ in the form of an equation is

• x – 10 = 20

• x + 10 = 20

• 10 x = 20

• 10/x =20

Solve :

2 x + 3 = 3(x – 4)

• -15

• 9

• 15

• 10

In a two digit number, the unit’s digit is x and the ten’s digit is y. Then, the number is

• 10 y + x

• 10 x + y

• 10 y – x

• 10 x – y.

Find the value of x

 $\frac{3}{4}x\ =7-x$  

• 4

• 3

• 7

• 1

3/4 part of a number is 5 more than its 2/3 part.

This statement in the form of an equation is

• 2/3 x - 3/4 x = - 5

• 3/4 x - 2/3 x = -5

• 3/4 x = 2/3 x + 5

• 2/3 x = 3/4 x +5

 $\frac{5x}{3}=\ 300$ ; Find x.

• 90

• 120

• 150

• 180

Find x ; (2 x – 1) + (x – 1) = x + 2

• 1

• 2

• -1

• -2

 $\frac{9x}{7-6x}=15$  ; Find x.

• 33/35

• 32/35

• 35/26

• 35/33

 $\frac{\left(6x+7\right)}{\left(3x+2\right)}=\frac{\left(4x+5\right)}{\left(2x+3\right)}$  ; Find x.

• 11/9

• 2/5

• 2/3

• -11/9

 $\frac{\left(x+6\right)}{4}+\frac{\left(x-3\right)}{5}=\frac{\left(5x-4\right)}{8}$  ; Find x.

• 6

• 7

• 8

• 9