Question

me ajuda aii gente e trabalho de escola tenho que entregar 14:00

Answer 1

a) +24 b ) -7 c) +66 d) +33 e) +4 f) 2 g) 2 h) -3

a)  x + (-9) = 15 => x - 9 = 15 => x = 15 + 9 = 24
b) -4 + x = -11 => x = -11 + 4 = -7
c) x - (+56) = 10 => x - 56 = 10 => x = 10 + 56 = 66
d) 3.4 - x = -21 => 12 - x = -21 => -x = -21 - 12 = -33 => -x = -33 => x = 33
e) -12:6 + x = 2 => -2 + x = 2 => x = 2 + 2 = 4
f) 6 - x.(-4) = 14 => 6 + 4x = 14 => 4x = 14 - 6 = 8 => x = 8:4 = 2
g) 12 + 8:x - 6 = 10 => 6 + 8:x = 10 => 8:x = 10 - 6 = 4 => 8:x = 4 => 8/4 = x = 2
h) x:(2 - 5) - (-4) = 5 => x:(-3) + 4 = 5 => x:(-3) = 5 - 4 = 1 => x = 1.(-3) = -3