Question

) Solve the following simultaneous equation
4x + 4y = 34
x + 4y = 16
​

Answer 1

Answer:

x = 6,

y = 2.5

Step-by-step explanation:

Let

4x + 4y = 34   be    (1)

x + 4y = 16 be         (2)

Subtract equation (2) from equation (1)

(4x + 4y = 34 ) - ( x + 4y =  16)

3x = 18

x = 6

put x= 6 in equation (2)

6 + 4y = 16

4y = 10

y = 2.5

Answer 2

4x + 4y = 34

let X = 1

4(1) + 4y = 34

4 + 4y = 34

4y = 34/4

4y = 8.5

y = 8.5/4

y = 2.125

X + 4y = 16

let X = 2

2 + 4y = 16

4y = 16 - 2

4y = 14

y = 14/4

y = 3.5

HOPE IT HELPS ^_^