-(5х-10х) +18*(5х-10)+15х=5
-(4х+34)-х+39+10х=74
Решить уравнения

-(5х-10х) +18*(5х-10)+15х=5- ( - 5х ) + 18( 5x - 10 ) + 15x = 5 5x + 90x - 180 + 15x = 5 110x = 5 + 180 x = 185 : 110 x = 1 75/110 x = 1 15/22 -------------------------------------------- -(4х+34)-х+39+10х=74- 4x - 34 - x + 39 + 10x = 74 5x = 74 - 5 x = 69 : 5 x = 13,8