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butalik [34]
3 years ago
9

Solve the equation and explain​

Mathematics
1 answer:
miss Akunina [59]3 years ago
8 0
Start by simplifying the equation by cross multiplying

9(z+1) = 3z

then distribute 9 into the brackets

9z + 9= 3z

then move the constant to the right hand side and change its sign

9z = 3z -9

then move the variable to the left hand side and change its sign

9z - 3z = -9

collect like terms

6z = - 9

then divide both equations by 6 to get z by itself

z = -9/6

simplify the fraction

z = -3/2
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