Question

Help ASAP

7. Solve the equations:

-3 = z + 4

A. z = 4
B. z = -4
C. z = -7
D. z = 7

z - 4 = -8

A. z= -2
B. z = 32
C. z = -4
D. z = -12

6.4 = 4x

A. x = 2.4
B. x = 1.6
C. x = 4
D. x = 10.4

-9 = r/4

A. r = 36
B. r = 13
C. r = 9/4
D. r = -36

-9 = 3/8n

A. n = =24
B. n = 24
C. n = 5
D. n = -5

Answer 1

1)-3=z+4
z=-4-3=-7
answer is C

2)z-4=-8
z=-8+4=-4
answer is C

3)6.4=4x
4x=6.4/4
x=1.6
answer is B

4)-9=r/4
r=-9×4=-36
answer is D

5)-9=3/8n
n=-9×3/8
n=-24
answer is A, I guess, because there are two = signs, so perhaps this is a mistake and there should be - instead of =

Answer 2

1)C
2)C
3)B
4)D
Idk last one