Linear Equation | MCQs

Explanation

To find the value of 2x + 3y when x = 3 and y = 2, we substitute these values into the expression and perform the calculations.

Given:

x = 3

y = 2

Substituting these values into the expression:

2x + 3y = 2(3) + 3(2)

Simplifying the expression:

2x + 3y = 6 + 6

Calculating the sum:

2x + 3y = 12

Therefore, when x = 3 and y = 2, 2x + 3y equals 12.

Explanation

A linear equation in two variable has infinitely many solutions and its graph is always a straight line.

Explanation

Explanation

Suppose first digit = A

Second digit = B

A + B = 30 i

A - B = 8 ii

A = 30 - B

(30-B) - B = 8

30 - 2B = 8

-2b = 8 -22

2b = 22

B= 11 

A + 11 = 30

A = 30 - 11

A = 19

A = 19 anf B = 11

A + B = 209

Explanation