Question

Solve by elimination method
1.4a+b=65, a +2b=35​

Answer 1

Answer:

4a + b = 65 ---------(1)

a + 2b = 35 ---------(2)

multiply (1) with number 2

(1) ×2 => (4a + b) × 2 = 65 × 2

=> 8a + 2b = 130 ----------(3)

now subtract (2) from (3)

(3) - (2) => ( 8a + 2b ) - ( a + 2b ) = 130 - 35

=> 8a +2b - a - 2b = 95

+2b and -2b will get cancelled,

8a - a = 7a

=> 7a = 95

=> a = 95/7

from (2) substitute a

=> (95/7) + 2b = 35

=> 2b = 35 - (95/7)

=> 2b = 150/7

=> b = 150/14

=> b = 75/7

HOPE IT HELPS YOU

PLEASE MARK THIS ANSWER AS BRAINLIST ANSWER ☺️☺️☺️☺️