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Aleksandr-060686 [28]
3 years ago
5

Solve for z. –9 + 8(14z + 2) = 7(17z + 8) z =

Mathematics
2 answers:
Over [174]3 years ago
8 0

Answer:

\boxed{z = -7}

Step-by-step explanation:

=  >  - 9 + 8(14z  + 2) = 7(17z + 8) \\  \\  =  >  - 9 + (8 \times 14z + 8 \times 2) = (7 \times 17z) + (7 \times 8) \\  \\  =  >  - 9 + 112z + 16 = 119z + 56 \\  \\  =  >  7 + 112z = 119z + 56\\  \\  =  >  7 + 112z - 119z = 56 \\  \\  =  >   7 - 7z = 56 \\  \\  =  >  - 7z = 56 - 7 \\  \\  =  >  - 7z = 49 \\  \\  =  > 7z =  - 49 \\  \\  =  > z =  -  \frac{49}{7}  \\  \\  =  > z =  - 7

monitta3 years ago
5 0

Answer:

z=-7

Step-by-step explanation:

-9+8*14z+8*2=7*17z+7*8

-9+112z+16=119z+56

112z+7=119z+56

-112z       -112z

7=7z+56

-56    -56

-49=7z

:7     :7

z=-7

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