Answer:
x = -6
-18+4y=0 => 4y=18 =>y=18/4=9/2
Y=5
3x+20=0 => x=3x= -20=> x= -20/3
Step-by-step explanation:
Answer:
Number 21 is < number 23 is > number 22 is < and number 24 is >
Step-by-step explanation:
Answer:
5x + 10y
5*4 + 10*5
20+50 = $70
Step-by-step explanation:
9 + 1/2 (7n - 26) - 8n
Expand brackets by multiplying by 1/2:
9 + 3.5n - 13 - 8n
Collect like terms:
4.5n - 4
Turn it into an equation:
4.5n - 4 = 0
Isolate 4.5n by adding 4 to both sides:
4.5n = 4
Divide both sides by 4.5 to get the value of n:
n = 8/9
25/40 = x/120
solve for x you get 75
