Question

0.4u +0.3v =0.8 and 0.6u -0.4v =-0.5 ​

Answer 1

multiply by 3 & 2 in both eqn

then i becomes

1.2u + .9v = 2.4

&

eqn ii

1.2u - .8v = -1

sub ii from i

1.2u - 1.2u + 0.9v + 0.8v = 2.4 + 1

1.7v = 3.4

v = 2

put value of v in eqn i

0.4u + 0.3 (2) = 0.8

0.4u + 0.6 = 0.8

0.4u = 0.2

u = 0.2 / 0.4

u = 1/2

Answer 2

Answer:

u=1/2

v= 2

Step-by-step explanation:

hope it'll help you