solve the following equations .
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Verified answer
Step-by-step explanation:
(0.4z - 3)/(1.5z + 9) = 7/5
Cross multiplication
5(0.4z - 3) = 7(1.5z + 9)
2z - 15 = 10.5z + 63
2z - 10.5z = 63+15
-8.5z = 78
z = -78/8.5
z = -9.17