Ok so for starters you want to choose an equation and solve for a variable.
So, I am going to choose x from the first equation.
Add y to both sides and you get x=11+y
Next, substitute 11+y for x in the other equation so you get...
2(11+y) +10y=-6
Next distribute the 2 throug the 11 and the y
22+2y+10y=-6
12y=-28
y=-28/12
reduce this fraction to make this easier.
y=-7/3
Now plug in why to either of the equations to find x
x-(-7/3)=11
x+7/3=11
x=11-(7/3)
x=(33/3)-(7/3)
x=26/3
so x = 26/3 and y = -7/3
you can also check to see if this is correct by substituting each of these values into the equations.
Answer:
1.333...
Step-by-step explanation:
because irrational numbers can be repeating decimals, numbers that aren't perfect squares,and numbers that can not be in fraction form.
Answer:
1, 2, 3, 4, 6, 9, 12, 18, 36
Step-by-step explanation:
Sarah is 14
The twins are 12
The youngest (n) is 7
14+(12+12)+7=45
n=7