Question

28+(45+х)=100., 14х+х-9х+2=56.,(9y+50)/14=4.,(99-9у)*8+14=86.,32+(136-х*8)/4=64

Answer 1

28+45+х=100
х=100-28-45
х=27

14х+х-9х+2=56
6х=56-2
6х=54/:6
х=9