Question

calcule o valor do x : a) x-9:8 b) x-5:-7 c) x+5:-6 d) x+5-:6 e) x-3:-4 f) x+8:11 i) x+9:-12 por favor me ajudem

Answer 1

A)
x-9=8
X=9+8(isolando o X e trocando o sinal)
X= 17
B)
x-5=-7
x=-7+5
x= -2
C)
x+5=-6
x=-6-5
x= -12
D)
X+5=-6
x=-6+5
x=-1
E)
X-3=-4
x=-3+4
x=1
F)
X+8=11
x=11-8
x=3
I)
x+9=-12
x=-12-9
x=-21