First, you make 9 into a fraction which would become 36/4
then, subtract 9/4 from both sides so that would give you 3/4x = 27/4
then divide each side by 3/4 (same thing as multiply by its reciprocal) and that would give you x=9
Answer:
y > 11/2
Step-by-step explanation:
This is solved the same way a 3-step equation is solved.
<u>Step 1</u>: subtract the smaller variable term from both sides.
4y -2y +3 > 2y -2y +14
2y +3 > 14
<u>Step 2</u>: subtract the constant with the variable term.
2y +3 -3 > 14 -3
2y > 11
<u>Step 3</u>: divide by the coefficient of the variable.
2y/2 > 11/2
y > 11/2
_____
<em>Additional comment</em>
By choosing to subtract the smaller variable term in the first step (regardless of which side of the inequality it is on), we ensure that the remaining variable coefficient is positive. That means we can do step 3 without worrying about changing the direction of the inequality symbol, because we're dividing by a positive number.
B. 2
4x + 3 = 7x - 3
7x - 4x = 3 + 3
3x = 6
x = 2
Answer:
x=1 y=2
Step-by-step explanation:
x=1 y=2
8x +4 y=16
8(1) + 4(2)=16
8+8=16
this is correct so now lets check the other one
7y=15-x
7(2)=15-(1)
14=14
this is also correct
Try simplifying the equation first. Don't fully understand the question but I hope this helps.
2x cubed
2x * 2x * 2x = 8x
8x+4x= 12x
12x=3
