Question

Реши уравнения. 90 - ( 7 * х + 19 ) = 36 56 / х + 12 * 3 = 44

Answer 1

90-(7х+19)=36
7х+19=90-36
7х+19=54
7х=54-19
7х=35
х=35:7
х=5
90-(7*5+19)=36

56/х+12*3=44
56/х+36=44
56/х=44-36
56/х=8
х=56:8
х=7
56/7+12*3=44