PLEASEEEE
2007-08-08 11:41:00 · 4 answers · asked by booboobear_619 1 in Education & Reference ➔ Homework Help
Let one of the numbers be x
therefore the other number is 8-x
so we get
x - (8-x) = 12
x-8 + x = 12
2x = 12+8
2x = 20
x = 20/2
x = 10
2007-08-08 15:43:07 · answer #1 · answered by bejoulais 1 · 0⤊ 0⤋
Your two equations are
a+b=8
a-b=12
Then you solve: a+= 8-b
substitute a in the second equation: 8-b-b=12, 8-2b=12, -2b=4
b=-2
substitute b in the first equation : a+(-2)=8, a=10
2007-08-08 18:47:10 · answer #2 · answered by siamcatp 4 · 1⤊ 0⤋
x + y = 8
x - y = 12
There are several ways to solve this
One easy one is to add the equations
So,
2x = 20
and, x = 10
Now substitute
10 + y = 8
Solve for y by subtracting 10 from both sides
y = - 2
2007-08-08 18:43:37 · answer #3 · answered by ignoramus 7 · 0⤊ 1⤋
x+y=8
x-y=12
x=-2
y=10
2007-08-08 18:45:39 · answer #4 · answered by sarah 2 · 1⤊ 0⤋