3z-1/5=3+z/7 solve the equation
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Answered by
3
by cross multiplication
21z-7=15+5z
16z=22
z=22/16=11/8
21z-7=15+5z
16z=22
z=22/16=11/8
prits24:
this is wrong but
the answer have to be 7
sorry bt what I know I did that
yeah...thats why thank u but i dont know y d answer is 7
ok thanks
Answered by
1
If it is (3z-1)/5 = (3+z)/7 then, You cross-multiply and get: (3z-1)7 = (3+z)5 21z-7 = 15+5z 21z-7-5z = 15 21z-5z = 15+7 16z = 22 z = 22/16 z = 1.375
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