RESOLVA AS SEGUINTES EQUAÇÕES:
a) 5x – 17 = 3x + 79
b) 5x – 12 + 17 = - 6x + 49
c) - 3x – 21 = 33
d) - 21 + 2x + 13 = - 3x + 4x + 80
e) 3x + 21 = 5x – 17
f) 4.( 3x + 25) = 148
g) 2.( x + 5 ) – 3.(2x – 2) = 52
h) 3.(3x – 1) + 2.( 2x + 7) = 61 + 3x
i) – 4(x – 3) + 2.( x + 3) = -x + 25
Respostas
Resposta:Segue as contas abaixo na explicação
Explicação passo-a-passo:
a) 5x – 17 = 3x + 79 b) 5x – 12 + 17 = - 6x + 49 c) - 3x – 21 = 33
5x-3x=79+17 5x+5=-6x+49 -3x=33+21
2x=96 5x+6x=49-5 -3x=54
x=96/2 11x=44 x=54/-3
x=48 x=44/11 x=-18
x=4
d) - 21 + 2x + 13 = - 3x + 4x + 80 e) 3x + 21 = 5x – 17
2x-8=x+80 3x-5x=-17-21
2x-x=80+8 -2x=-38(-1)
x=88 2x=38
x=38/2
x=19
f) 4.( 3x + 25) = 148 g) 2.( x + 5 ) – 3.(2x – 2) = 52
12x+100=148 2x+10-6x+6=52
12x=148-100 -4x+16=52
12x=48 -4x=52-16
x=48/12 -4x=36
x=4 x=36/-4
x=-9
h) 3.(3x – 1) + 2.( 2x + 7) = 61 + 3x i) – 4(x – 3) + 2.( x + 3) = -x + 25
9x-3+4x+14=61+3x -4x+12+2x+6=-x+25
11x+11=61+3x -2x+18=-x+25
11x-3x=61-11 -2x+x=25-18
8x=50 -x=7(-1)
x=50/8:2/2 x=-7
x=25/4