Question

iii. Solve this simultaneous linear equation by Cross Multiplication
20u – 30v = 13, 10v – 10u = -5

Answer 1

Answer:

20u-30v=13

-20u+20v=-10(multiplying eq 2 by 2)

Therefore,

-10v=3

v= -3/10

Putting v =-3/10 in eq 1

20u - 30(-3/10) = 13

20u + 9 =13

Theredore

u = 1/5