Question

решить (2х-1.5):2_1/7=1_2/3:5/14 и 0,84:7/15=0.5у+2.5:3_1/3

Answer 1

$(2x-1.5)* \frac{7}{15} = \frac{5}{3} * \frac{14}{5} \\ (2x-1.5)= \frac{14}{3}* \frac{15}{7} \\ 2x-1.5=6 \\ 2x=4.5 \\ x=2.25 \\ \\ 0.84* \frac{15}{7} =0.5y+2.5* \frac{3}{10} \\ 1.8=0.5y+0.75 \\ 0.5y=1.05 \\ y=0.21$