X + y = 5 and y = 3x - 1
x - y = -3 2x + y = 14
Solve using substitution.
First, isolate one variable.
x + y = 5
x = 5 - y
Then, plug its expression into the other equation and solve.
x - y = -3
5 - y - y = -3
5 - 2y = -3
-2y = -8
y = 4
Next, plug your new value into one of the original equations to solve for the second variable.
x + y = 5
x + 4 = 5
x = 1
Finally, check work with substitution.
x + y = 5 => 1 + 4 = 5 <--True
x - y = -3 => 1 - 4 = -3 <--True
Next.
y = 3x - 1
2x + y = 14
2x + y = 14
2x + (3x - 1) = 14
2x + 3x - 1 = 14
5x - 1 = 14
5x = 15
x = 3
y = 3x - 1
y = 3(3) - 1
y = 9 -1
y = 8
y = 3x - 1 => 8 = 3(3) - 1 => 8 = 9 - 1 <--True
2x + y = 14 => 2(3) + 8 = 14 => 6 + 8 = 14 <--True
Answer:
4.
x = 1
y = 4
5.
x = 3
y = 8
It c) because it 56 out of 100
#1: A checking account is not a type of savings instrument.
#2: Closing costs contain additional fees such as taxes and title fees.
Answer:
find the LCM of denominators and multiply the last answers of LCM for example take 1/3 and 1/2 it's LCM is 6
1/3 = 1×2/3×2 = 2/6
1/2 = 1×3/2×3 = 3/6
then subtract 3-2/6 = 1/6 this is subtraction
instead of subtracting just add it