18cm I think
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Answer:
Step-by-step explanation:
It's hard to tell what you really intend. I'll do it both ways.
Way One
9 + x/6 = 11 Subtract 9 from both sides.
x/6 = 11 - 9
x/6 = 2 Multiply both sides by 6
x = 2 * 6
x = 12
1 + 3x = 1 + 3*12 = 1 + 36 = 37
Way Two
(9 + x)/6 = 11 Multiply both sides by 6
9 + x = 11 * 6 Simplify the right side
9 + x = 66 Subtract 9
x = 57
1 + 3*57 = 1 + 171 = 172
Answer:
5
Step-by-step explanation:
I think ours 5 minutes to complete the piece of work
How am I supposed to know..... you think I'm smart.
If you are solving for x then here’s how:
(3x2 + 4x - 12) = (x + 5)
Remove the x on the left by remove one x from both of the sides.
(3x2 + 3x - 12) = 5
Add 12 onto both sides
(3x2 + 3x) = 17
Multiply
(6 + 3x) = 17
Take away 6 from both sides
3x = 11
Divide by 3 on both sides
x = 3.666 recurring