4m+9+5m-12= 42
my question is how to get m=5 (the answer) can u show me the steps to do this problem right please because i keep getting 6 ?
4m+5m=9m
and
9-12 = -3
so what we have is
9 m - 3 = 42
add 3 to both sides
9 m = 45
divide both sides by 9
m = 5
thank you !
To solve the equation 4m + 9 + 5m - 12 = 42 and find the value of m, we need to simplify the equation by combining like terms and then isolate the variable on one side of the equation. Here are the steps to solve the equation:
1. Combine like terms:
Start by combining the "m" terms on the left side of the equation and the constant terms on both sides.
4m + 5m + 9 - 12 = 42
(4m + 5m) + (9 - 12) = 42
9m - 3 = 42
2. Isolate the variable:
To isolate the variable "m," we need to move the constant term (-3) to the other side of the equation. We can do this by adding 3 to both sides:
9m - 3 + 3 = 42 + 3
9m = 45
3. Solve for m:
To find the value of m, we divide both sides of the equation by 9:
(9m)/9 = 45/9
m = 5
So, the value of m that satisfies the equation is m=5.