Question

Preciso do Calculo e Resposta: Equações do 1° Grau Resolver Tudo

1°) 2. ( y+5 ) - ( y-1 ) = 0                      2°) 2. ( x-1 ) + 3. ( x+1 ) = 4. ( x+2 )

3°- A) 3. ( x+2 ) = 2. (x-7)
B) 3. ( x+3 ) - 1 = 2
C) 2x + 2 + 5x - 5 = 7
D) 20x + 64x - 36x = 96 + 192
E) 5x + 5 + 6x + 12 = 9x + 27

4° A) 10x + 16 = 14x + 8
B) 5. ( x+6 ) = -20
C) 3x + 6 = 7x + 3
D) 4x + 6 + 5x + 5 = 8 - 3x + 3

Answer 1

1°) 2. ( y+5 ) - ( y-1 ) = 0 2y+10 -y+1 = 0 2y-y+10+1 = 0 y+11 = 0 y = -11 2°) 2. ( x-1 ) + 3. ( x+1 ) = 4. ( x+2 ) 2x-2+3x+1 = 4x+8 2x+3x-4x = 8-2-1 X = 5 3°- A) 3. ( x+2 ) = 2. (x-7) 3x+6 = 2x-14 3x-2x = -14-6 5x = -20 X = 20/5 X = 4 3- B) 3. ( x+3 ) - 1 = 2 3x+9-1 = 2 3x = 2+1-9 X = -6/3 X = -2 3- C) 2x + 2 + 5x - 5 = 7 7x-3 = 7 7X = 7+3 X = 10/7 3 - D) 20x + 64x-36x = 96+192 120x = 288 X = 288/120 3 - e) 5x+5+6x+12 = 9x+27 11x+17 = 9x+27 2x = 10 X = 5 4- a) 10x+16 = 14x+8 4x = 8 X = 4 B) 5 (x+6) = -20 5x+30 = -20 X = -50/5 X = -10 C) 3x+6 = 7x+3 6-3 = 7x-3x 3 = 4x X = 3/4 D) 4x+6+5x+5 = 8-3x+3 9x+11 = -3x+11 12x = 0 X = 0/12 X = 0