It depends on the problem you are trying to solve. like; 2x + 3 = 13. it would be "5". (Multiplication.) or x/3 = 6. x= 18. this is a division problem. Like I said, it all depends on your problem.
x
x=8
When x = 5, 12x = 12*5 = 60.
x=8
The reason trigonometry is used is simply because there are angles involved.The reason vectors are solved for "x" and "y" is because to add vectors together, you first need to separate them into their base components.
Use this equation: quarts x 0.9464 = liters (US)
It depends on the problem you are trying to solve. like; 2x + 3 = 13. it would be "5". (Multiplication.) or x/3 = 6. x= 18. this is a division problem. Like I said, it all depends on your problem.
You cannot "solve" 100 -x since it is neither an equation nor an inequality.
substitute 0 for y and solve for x. then substitute x for 0 and solve for why and you have the x and y coordinates
x
3
x=8
138 x 00001 = 138 x 1 = 138.
When x = 5, 12x = 12*5 = 60.
x=8
Subtract x so -4 = 2x/ x= -2