Isolate the x. Do the opposite of PEMDAS. First, add 30 to both sides
-6 (+30) > - 30 (+30) - 4x
24 > -4x
Isolate the x. Divide -4 from both sides. Note that when dividing a negative, you must flip the sign.
24/-4 > -4x/-4
24/-4 > x
-6 < x
-6 < x is your answer
hope this helps
Answer:
-13
Division
Step-by-step explanation:
divide both sides by -17 in order to find the value of x
i think it's b. model of car
C=x+9, c+x=99, c=99-x
So we have two equations equal to c, c=x+9 and c=99-x, since c=c:
x+9=99-x
2x+9=99
2x=90
x=45, and since c=x+9, c=54
So Charlie weighs 54 kg and his brother weighs 45 kg.