Question

A)4x + 18 = -2x + 42
b)7x + 25 = 2x + 105
c) 2x + 10 = - 3x + 40
d)8x + 49 = x + 63
e)10x + 24 = 4x + 66
f)4x + 10 = -6x + 70
g)2x - 15 = -x-36

Com calculo please
i)

Answer 1

a)
$4x + 18 = - 2x + 42 \\ 4x + 2x = 42 - 18 \\ 6x = 24 \\ x = 24 \div 6 \\ x = 4$
b)
$7x + 25 = 2x + 105 \\ 7x - 2x = 105 - 25 \\ 5x = 80 \\ x = 80 \div 5 \\ x = 16$
c)
$2x + 10 = - 3x + 40 \\ 2x + 3x = 40 - 10 \\ 5x = 30 \\ x = 30 \div 5 \\ x = 6$
d)
$8x + 49 = x + 63 \\ 8x - x = 63 - 49 \\ 7x = 14 \\ x = 14 \div 7 \\ x = 2$