Divide each term by 10 to get b alone
10b = −10 = 10b/10 = -10/10
b = -1
Answer:
17.5
Step-by-step explanation:
10 potatoes = 15 mashed
15 potatoes = 17.5 mashed
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
Answer:
-19/10
Step-by-step explanation:
