Ok so we have the first portion. We need to do cross multiplication first. So that would be 20(2x - 9) and 10(9)
So
20(2x - 9)=90
40x - 180=90
Then add 180 to itself then to 90
40x=270
X=6.75
Now let’s set the next one up knowing what we know from the previous one.
18(3x + 4)= 12(15)
54x + 72=180
Subtract 72 from it’s self and 180
54x=108
X=2
Answer:
y = 60, x= 50
Step-by-step explanation:
y + 120 = 180
subtract 120 from both sides
y = 60
60 + 70 = 130
x + 130 = 180
subtract 130 from both sides
x = 50
Answer:
10 1/2 sticks of clay
Step-by-step explanation:
14 × 3/4
14=14/1
14/1 × 3/4
multiply numerators
14 × 3 = 42
multiply denominators
1 × 4 = 4
42/4
simplify
21/2
convert improper fraction to mixed fraction
10 1/2