Answer: 2x-4
Step-by-step explanation:
Apply the distributive property.
−
2
(
9
−
x
−
1
⋅
7
)
Multiply
−
1
by
7
.
−
2
(
9
−
x
−
7
)
Simplify by multiplying through.
Subtract
7
from
9
.
−
2
(
−
x
+
2
)
Apply the distributive property.
−
2
(
−
x
)
−
2
⋅
2
Multiply
−
1
by
−
2
.
2
x
−
2
⋅
2
Multiply
−
2
by
2
.
2
x
−
4
