What is 5m+6+m-18=60

5m + 6m - 18 = 60 combine like terms

11m - 18 = 60 subtract from both sides

-18 -18

11m = 78 divide 11

m = 7. 0909.

round to. = 7.1

5m+6+m-18=60That’s a linear equation in ’m ’. There’s only one number that ’m’ can be

that makes the equation true. The assignment is usually to find out what

that number is.

Before we get carried away and confuse ourselves, let’s do some work

on the left side, and try to make it simpler.

Do you see that ’ 5m ’ and that ’ +m ’? We can combine them, and write ’ 6m ’.

Do you see that ’ +6 ’ and that ’ -18 ’? We can combine those, and write ’ -12 ’.

Now the equation is much simpler:

6m - 12 = 60

Add 12 to each side:

6m = 72

Divide each side by 6 :**m = 12 **

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