Is this problem correct?I'm trying to solve the equation.

8xt7=4x-5
x=2

I don't understand what you mean by 8xt7.

Do you mean 8x+7?

Is this problem correct?
8x+7=4x-5
x=2

nope the answer id -3....if u plug in 2 it would be 23=3...they don't equal to each other....

graph the sysytem of equation then find what is the solution
x+y=4
2x+y=19

To solve the system of equations, you can use the method of substitution or elimination. Here's how you can solve it using the method of substitution:

Step 1: Start with the first equation:
x + y = 4

Step 2: Solve the first equation for one variable in terms of the other. Let's solve for x in terms of y:
x = 4 - y

Step 3: Substitute the value of x from the first equation into the second equation:
2x + y = 19
2(4 - y) + y = 19

Step 4: Simplify and solve for y:
8 - 2y + y = 19
8 - y = 19
-y = 19 - 8
-y = 11

Step 5: Multiply both sides by -1 to solve for y:
y = -11

Step 6: Substitute the value of y back into the first equation to solve for x:
x + (-11) = 4
x - 11 = 4
x = 4 + 11
x = 15

So, the solution to the system of equations is x = 15 and y = -11.