Let a be the variable for the equation.
now equation for the situation is 1a + 2(a-3) = 91.50
1a + 2a - 6 = 91.50
3a = 97.50
thus, a = 97.5/3 = 32.5$
Now, price of first blouse = 32.5
The price of other two blouse = 32.5-3 = 29.5$
Answer:
B
Step-by-step explanation:
Answer:
x = 9
Step-by-step explanation:
1/4(8x+12) =21
1/4 * 8x = 2x
1/4 * 12 = 3
2x + 3 = 21
21 - 3 = 18
2x = 18
18/2 = 9
x = 9
Group 'em together
a
b
−
a
+
1
−
b
a
b
−
a
=
a
(
b
−
1
)
Notice that there will be a 1 as without it it'll simply be ab
1
−
b
=
1
(
1
−
b
)
Notice that it doesn't match with the upper one... so we'll change the signs
1
(
1
−
b
)
=
−
1
(
b−
1
)
(try to multiply them now!!
Jot them down in one expression
a
(
b
−
1
)
−
1
(
b
−
1
)
You get!!!!!!
(
a
−
1
)
(
b
−
1
)
