Answer:
-6
Step-by-step explanation:
10--6=16
10+6=16
Answer:
$9.40, $0.60, $10.60
Step-by-step explanation:
$8.53 + $0.87 = $9.40
$10 - $9.40 = $0.60
$20 - $9.40 = $10.60
Answer:
z = 21 ; y= 16
Step-by-step explanation:
first of all we have to isolate a variable.
In second expression we can obtain:
3y = 2z+6
y = 2/3 z + 2
now we have to substitute this value in the first equation and solve it
8(2/3z+2)-5z = 23
16/3z + 16 -5z = 23
16z +48 - 15z = 69
z = 21
now we have to substitute z in the second equation:
y = 2/3 (21) +2
y = 14+ 2 = 16
y = 16