Answer:
A) X + Y = 12
B) 10Y + x = 10x + Y -18
B) 9Y = 9x -18 multiplying A) by -9
A) -9Y = 9x - 72 adding A and B we get
0 = 18x -90
x = 5
The number is 75
Double-Check
7 + 5 = 12
75 -57 = 18
Step-by-step explanation:
Answer:
a. -2/12
b. -0.1
c. 1/9
Step-by-step explanation:
-2/12 = -1/6 < -1/8
-0.1 = -1/10 > -1/8
and 1/9 is the only positive fraction, making it simpler to place.
Answer:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:
(
1
,
−
2
)
Equation Form:
x
=
1
,
y
=
−
2
Step-by-step explanation:
Graph.
y
=
3
x
−
1
y
=
x
+
1
y
=
−
x
−
1
y
=
x
+
1
Answer:
10 more than fraction 1 over 4 of the sum of 5 and 3, then subtract 3
Step-by-step explanation:
Can't be the other ones