Answer:
Number 23:
x=7
y=6
Number 24:
x=-6
y= -5
Step-by-step explanation:
Number 23: You have to make one of the equations have only one variable per side
x-y=1 to x=1+y Then you put the 1+y in all the x's spots on the other equation
2(1+y)=14 Distribute the 2 to 1+y
2+2y=14 Subtract 2 from both sides
2y=12 divide both sides by 2
y=6 Now you fill in your answer for six to find the x
x-y=1
x-6=1 Add six to both sides
x=7
Number 24: You have to have one equation have only one variable per side
x+3y=-36 to x=-36-3y now you fill in all the spots with x's with -36-3y
x-4y=-1 fill in the x spot
-36-3y-4y=-1 simplify the -3y and the -4y to -7y
-36-7y=-1 Add 36 to both sides
-7y=35 Divide by -7 so the y will be positive
y=-5 Now fill in the y with -5 to one of the equations
x-4y=-1 fill in the y spot
x-(-5)=-1 a negative by a negative is a positive so make the 5 positive
x+5=-1 Subtract 5 from both sides
x=-6
