56 because you do 9x equal to 63. 63 divide by 9 is 7. 7 times 8 is 56
x+y+z=15
y =2x
z=y-20
substitute these equations into the first
x+2x+y-20 =15
now substitute 2x in for y
x + 2x +2x-20 =15
combine like terms
5x-20 =15
add 20 to each side
5x = 35
divide by 5
x=7
y =2x
y =14
z = y-20
z=14-20
z=-6
The third number is -6
$45 ÷ 5 = 9 (T-shirts sold so far)
$150 ÷ 5 = 30 (t-shirts they want to sell in order to have a goal of $150)
30-9= 21 more t-shirts
Ans: 21
Step-by-step explanation:
The fraction is 4/10 * 2/9 = 4/45.
