Question

what is the solution for this...

answer me it is urgent​

Answer 1

Solution

0.4z-3=7

1.5z+9=5

first we cross multiply each other.

so we multiply 0.4z-3*5

and 1.5z+9*7

so 5(0.4z-3) 7(1.5z+9)

so we use distributive property

2.0z- 15 =10.52+63

2.0z- 10.52 =63+15 (we transport the numbers)

- 8.5z=78

z=7.8÷ - 8.5

Hence

- 780÷85

so we got - 156÷17

hence the answer is

z= - 156÷ 17

Answer 2

Answer:

z= -156/17

Step-by-step explanation:

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