X÷9=45-(18+12) 7×y=100-37 x+40=24×3

Question

X÷9=45-(18+12)

7×y=100-37

x+40=24×3

Answer 1

Х/9 = 45 - ( 18 + 12 )
х/9= 15
х = 15 *9 
х= 135
б) х + 40 = 24 * 3 
х + 40 =72 
х = 72 - 40 
х = 32
в ) 7ху = 100 - 37
7ху =63
ху= 9