Question

решите уровнение 1)5 (8x+3)-12=83 2)2 (11x-5)-17x=55

Answer 1

1)5×(8x+3)-12=83. 40x+15-12=83. 40x+3=83. 40x=83-3. 40x=80. x=2; 2)2×(11x-5)-17x=55. 22x-10-17x=55. 5x-10=55. 5x=55+10. 5x=65. x=13.