Question

quanto é 4/5 (x-1)= 3/2
Tem que dar 23/8

Answer 1

$\dfrac{4}{5}(x-1)=\dfrac{3}{2}\\\\2\cdot4(x-1)=3\cdot5\\\\8(x-1)=15\\\\8x-8=15\\\\8x=23\\\\\boxed{\boxed{x=\dfrac{23}{8}}}$