Question

x + 20y -1000 =0 x + 26y -1180 = 0 solve using cross multiplication method​

Answer 1

Step-by-step explanation:

See my attachment for your answer .

For checking your answer .

In case I .

x + 20y - 1000 = 0

Put x = 1200/13 , y = 590/13

Now ,

1200/13 + 20 × 590/13 - 1000 = 0

1200/13 + 11800/13 - 1000 = 0

13000/13 - 1000 = 0

1000 - 1000 = 0

0 = 0 { Proved }

In case II .

0x + 26y - 1180 = 0

Put x = 1200/13 , y = 590/13

Now ,

0 × 1200/13 + 26 × 590/13 - 1180 = 0

0 + 15340/13 - 1180 = 0

15340/13 - 1180 = 0

1180 - 1180 = 0

0 = 0 { Proved }

Therefore ,

x = 1200/13

{ Proved }

y = 590/13

Answer 2

Answer:

Step-by-step explanation: