Question

16-2t=5t+9
and
5x+y=4
-5x+y=4

Answer 1

• 16-2t=5t+9

t=1

• 5x+y=4
• -5x+y=4

Y=2

X=0.4

Explanation:

first: 16-2t=5t+9

• collect the like terms which is : 16-9=5t+2t

★. the signs changes whenever you rearrange numbers don't forget that

• so 16-9=7 and 5t+2t=7t

therefore 7=7t.

• now we want to remove the "t" by its own so what's we gonna do is divide whatever is next to (7) on each side .
• 7 divided by 7 = 1 , so your answer will be t=1

second: 5x+y=4

-5x+y=4

• first we need to cancel out one of the letters

5x and -5x will cancel out then we can workout the rest

• +y=4

+y=4

2y=4

• divide each side by two this will u y=2

Now we got the Y value then we can workout the value of X

*choose one of the equations , I'll choose 5x+y=4

• 5x+2=4

5x=4-2

5x=2 now divide each side by 5.

so 5/2= 0.4

therefore the answer is X=0.4 and Y=2

★now we check if our answer is right

Check

choose any of the equations.

5x+y=4

5(0.4)+2=4

2+2=4

4=4

if they're both the same like this then your answer is correct.