Answer:
Step-by-step explanation:
Let's solve for x.
−3x−4y=5
Step 1: Add 4y to both sides.
−3x−4y+4y=5+4y
−3x=4y+5
Step 2: Divide both sides by -3.
−3x
−3
=
4y+5
−3
x=
−4
3
y+
−5
3
Answer:
x=
−4
3
y+
−5
3
Answer:
24
Step-by-step explanation:
4x=12
x=12/4
x=3
8×=?
8(3)=24
therefore, 8 pieces will cost 24.
another way is:
since 8 is 4×2
you could double the amount of money
12x2
which would also give you $24
Answer:
D=4
C=12.56
Step-by-step explanation:
D=2r
d=2×2
D=4
C=pi ×D
C=3.14×4
C=12.56
28 - 6n + 7.(5n - 2) - 2n
28 - 6n + 35n - 14 - 2n
28 - 14 + 35n - 6n - 2n
14 + 28n
14.(2n + 1)