Answer:
63 I think
you can find a common denominator by multiplying the denominators together. however keep in mind that what you do to the bottom you must do to the top
1/7 would become 9/63 and 2/9 would become 14/63
Isolate the a. Note the equal sign. What you do to one side, you do to the other.
Add 5 to both sides
-5 (+5) + 1/5a = 4 (+5)
1/5a = 9
Isolate the a. Multiply 5 to both sides
(5)(1/5)a = 9(5)
a = 9 x 5
a = 45
45 is your answer for a.
hope this helps
Standard form : Ax + By = C
3x = 6y + 8...subtract 6y from both sides
3x - 6y = 8 <===
Answer:
5 divided by 3??
Step-by-step explanation:
Y - 4x = 7...y = 4x + 7
now sub 4x + 7 in for y in the other equation
2y + 4x = 2
2(4x + 7) + 4x = 2
8x + 14 + 4x = 2
12x = 2 - 14
12x = - 12
x = -1
y - 4x = 7
y - 4(-1) = 7
y + 4 = 7
y = 7 - 4
y = 3
solution is : (-1,3)
