Question

necesito ayuda en matemáticas bros por favor ​

Answer 1

$6+-7-(-8)+4-2 \\ =6 - 7 + 8 + 4 - 2 \\ = 18 - 9 \\ = 9$

$16 - 21 + 18 - 8 \\ = 34 - 29 \\ = 5$

$108 + - 200 + 9 - 42 \\ = 108 - 200 + 9 - 42\\ = 117 - 242 \\ = - 125$

$46 - (38 - ( - 2) + - 9 + (42 - 18 + - 15) - ( - 7)) \\ = 46 - (38 + 2 - 9 + 42 - 18 - 15 + 7) \\ = 46 - 38 - 2 + 9 - 42 + 18 + 15 - 7 \\ = 88 - 89 \\ = - 1$

$30 \div (( - 12 + 9) -( 3 \times 3 - 12 \div 3) + 2) \\ = 30 \div (( - 3) - (9 - 4) + 2) \\ = 30 \div ( - 3 - (5) + 2) \\ = 30 \div ( - 3 - 5 + 2) \\ = 30 \div ( - 8 + 2) \\ = 30 \div - 6 \\ = - 5$

$45 \div ( - 2 + 12 \div ( - 7 + 3) + 12 - (24 \div ( - 3 \times 5 + 7)) + 5) \\ = 45 \div ( - 2 + 12 \div - 4 + 12 - (24 \div ( - 15 + 7)) + 5) \\ = 45 \div ( - 2 - 3 + 12 - (24 \div - 8)) + 5 )\\ = 45 \div ( -5 + 12 - ( - 3) + 5) \\ = 45 \div ( 12 + 3) \\ = 45 \div 15 \\ = 3$

$(8 \times 7 + 5 \times - 8) \div ( - 4) \\ = (56 + - 40) \div - 4 \\ =( 56 - 40) \div - 4 \\ = 16 \div - 4 \\ = - 4$