Substitution Math?

Question

y=3x-10
y=2x-5

Answer 1

Put 1. into 2.:

3x - 10 = 2x - 5

Solve for x:

x = 5.

Solve for y from 2:
y = 5.

Answer 2

here's the solution:
y = 3x -10
y = 2x - 5
so:
equating both y's
3x - 10 = 2x - 5
3x - 2x = 10 - 5
x = 5 <<====

if x = 5:
y = 2x - 5
y = 2(5) - 5
y = 5 <<====

Answer 3

y=3x -10
y=2x -5
Take 2x -5 from the second equation and "substitute" it for y in the first equation
2x-5=3x-10
2x-3x=-10+5
-x =-5
x=5
Use either original equation to find y
y=3x-10
y=3(5) -10
y=15-10
y=5
Your answers are x=5 and y=5. I checked them and they are correct.

Answer 4

y=3x-10
y=2x-5
3x-10 = 2x-5 [since they both = y, they = each other]
3x-2x = 10 - 5
x = 5

Answer 5

Since y is equal to 3x-10, you can substitute for y in the second equation:

y = 2x-5
3x-10 = 2x-5

Now all you need to do is solve for x:

3x-10 = 2x-5
x = 5

Answer 6

basically, since both of the equations are equal to y, u set them equal to each other

3x-10 = 2x-5

then just move the 10 over to other side and the 2x to the other, and simplify

3x-2x = -5+10 so,
x = 5

Answer 7

y=3x-10, y=2x-5

3x-10=2x-5
-2x -2x

x-10=-5
10 10

x=5