Question

Slove the equation by trail and error method 3x-12=6

Answer 1

Step-by-step explanation:

3x-12=6

3x=6+12

3x=18

x=18/3

x=6

hope it helps you

Answer 2

Answer:

$3x - 12 = 6 \\ 3x = 6 + 12 \\ 3x = 18 \\ x = \frac{18}{3} = 6$

Trial and error method

$let \: x \: be \: 1 \: so \: \\ 3(1) - 12 = 6 \\ 3 - 12 = 6 \\ ( - 9) = 6 \\ \\ let \: x \: be \: 2 \: so \: \\ 3(2) - 12 = 6 \\ 6 - 12 = 6 \\ ( - 6) = 6 \\ \\ let \: x \: be \: 3\: so \\ 3(3) - 12 = 6 \\ 9 - 12 = 6 \\ ( - 3) = 6 \\ \\ let \:x \: be \: 4\: so \\ 3(4) - 12 = 6 \\ 12 - 12 = 6 \\ 0 = 6 \\ \\ let \: x \: be \: 5 \: so \\ 3(5) - 12 = 6 \\ 15 - 12 = 6 \\ 3 = 6 \\ \\ let \: x \: be \: 6\: so \\ 3(6) - 12 = 6\\ 18 - 12 = 6 \\ 6 = 6 \\ so \: 6 \: is \: the \: answer$