Question

Solve the following equations:
a) -2(1 – z) + 3 = 7
b) 5 – 4 ( t -3 ) = 17
c) 7p/8 = 7/8
plzzzz help :(

Answer 1

a. -2( 1 -  z ) + 3 = 7

Solution : -2( 1 - z ) + 3 = 7

-2 + 2z + 3 = 7

-2 + 2 + 2z + 3 - 3 = 7 + 2 - 3

2z = 7 - 1

2z = 6

z / 2  = 6 / 2

z = 3

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b. 5 - 4( t - 3 ) = 17

Solution : 5 - 4( t - 3 ) = 17

5 - 4t + 12  = 17

5 - 5 - 4t + 12 - 12 = 17 - 5 - 12

- 4t = 17 - 17

- 4t = 0

- 4t / (  - 4 )  = 0 / (  - 4 )

t = 0

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c. ( 7p ) / 8 = 7 / 8

solution : ( 7p )  / 8 =7 / 8

8 × ( 7 p / 8 ) = 8 × 7 / 8

( 7p ) / 1 = 7 / 1

7p = 7

7p / 7 =  7 / 7

p = 1