Answer:
I think it is 2 hrs... if there are not any extra variables.
Step-by-step explanation:
8x-5=19
+5 on each side
8x=24
Divide by 8 on each side.
X=3
q= 6
r= 7
work--
Multiply 1st column by -2:
-30q+8r=-124
5q+8r=86
Subtract 2nd column from the first column:
-35q= -210
Solve for q:
q=6
Subtract q=6 by any of the two equations, so:
-30q+8r=-124
-30*6+8r=-124
Solve for r:
r=7
A constant is a number that never changes value. Example:
x + 3 = 5, 3 and 5 are constants.
