X+y=4
2x+y=6
make first equation negative
-x-y=-4
add to first equation
2x-x+y-y=6-4
x=2

subsitute
x+y=4
2+y=4
y=2

or
x+y=4
subtract x from both sdies
y=4-x
subsitute 4-x for y in second equation
2x+4-x=6
x+4=6
x=2

5 0

4 years ago

Which calculation and answer show how to convert

expeople1 [14]

Answer:

The first option. See attachment.

Step-by-step explanation:

Explained on attached image.

3 0

2 years ago

A serviceman charges ₱450 per hour for doing mechanical jobs. How much does he get for 6.75 hours of doing the job?

vredina [299]

Answer:

450×6.75 = 2 956.5

So the serviceman will get 2 956.5 after 6.75 hours of doing the job

7 0

2 years ago