Question

What is y when x is equal to 10 in 10x+y=19

Answer 1

10x+y=19

when x = 10:

substitute with x=10 into the equation given:

10(10) + y = 19

or:

100 + y = 19

bring 100 to the other side to be -100

y = 19 - 100

y = -81


That's it