Question

ECUACIÓN LINEAL BÁSICA
1) 4(2 − 3x) = −2x – 27
2) 3(4x + 7) = 4x – 25
3) 7x + 15 = 3(3x − 7)
4) 2x - (1 - 6x) = 15
5) 9 - (2m - 3 ) = 20 - 4m

Answer 1

1) 4(2 − 3x) = −2x – 27
8-12x=-2x-27
8+27=12x-2x
35 = 10x
35/10 =x
7/2 = x

2) 3(4x + 7) = 4x – 25
12x +21 = 4x-25
12x-4x=-25-21
8x = -46
x= -46/8
x= -23/4

3) 7x + 15 = 3(3x − 7)
7x+15 = 9x-21
15+21 =9x-7x
36 = 2x
36/2 =x
18=x

4) 2x - (1 - 6x) = 15
2x -1 +6x = 15
8x -1 = 15
8x = 15 +1
8x = 16
x 16/8
x= 2


5) 9 - (2m - 3 ) = 20 - 4m
9 - 2m + 3 = 20 - 4m
12 -2m = 20 -4m
4m -2m = 20-12
2m = 8
m = 8/2
m = 4