Question

ME AJUDEM POR FAVOOOR, PRA HJ
Resolva a equação
• 10 ( X + 1) - 5 ( X - 2 ) = 70
• 7 ( 2 + X ) = 5 ( X - 1.2 ) + 35

Answer 1

a) 10 (x + 1) - 5 (x - 2) = 70 → 10x + 10 - 5x - 10 = 70 → 10x - 5x = 70 - 10 + 10 → 2x = 70 → x = 70 ÷ 2 → x = 35

b) 7 (2 + x) = 5 (x - 1,2) + 35 → 14 + 7x = 5x - 6 + 35 → 7x - 5x = 29 - 14 → 2x = 15 → x = 15

2

Espero ter ajudado!!!