Question

Which of the following is a solution to the equation 3/4x - 12 = -18?

Answer 1

Answer:

-8

Step-by-step explanation:

3/4x=-18+12

x=-6×4/3

x=-8

Answer 2

Answer:

x = -8

Step-by-step explanation:

$\frac{3}{4} x - 12 = - 18$

i) multiply both sides of equation with 4

$4(\frac{3}{4} x - 12) = 4( - 18)$

$(4 \times \frac{3}{4} x) + (4 \times ( - 12)) = - 72$

$3x - 48 = - 72$

ii) move -48 to the right-hand side and change its sign

$3x = - 72 + 48$

iii) calculate the sum

$3x = - 24$

iv) divide both sides of equation with 3

$\frac{3x}{3} = \frac{ - 24}{3}$

$x = - 8$