### Math and Equations

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How do you solve y-15=-4

5x+3y=9; 4y+7x=13

In matrix method

In matrix method

Find the value of x

G(x)=20

G(x)=20

What is the square root of 144?

3 is the solution of 6 x minus 2 is equals to 16 how to do that

Find a number whose fifth part increased by 30 is equal to its fourth part decreased by 30

Add (x+3) and (x square +7x+5)

How do you solve 2(2+6x)=-8

What is 7x7

One number is 5/2times as large as another.The sum of the number is 28.find the number.

13x+3/6=7

2p=3 (p-3)

If alfa and bita are the zeroes of x2-1 the find the auadratic polynomial whose zeroes are 2alfa upon bita and 2bita upon alfa

math

**Level**

Middle School

**Grade**

7

If both a and b are rational number, find the value of a and b in each of the equality 7+root 5 /7-root 5 -7 -root 5/7+root 5= a+root 5 raised to power b

7x-3=25

How did you solve the question plz show me

-6=\frac{x}{2}

**Solution:**

\left\{-12\right\}

**Calculated:** \left\{-12.0\right\}

5x+9=9

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