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77

3x + 4x = 847x = 84divide both sides by 7x = 12

7x + 8 = 84 7x = 84 - 8 x = 76/7 x = 10.8571

you do 3 plus 5 first then you get 8 you have to find out what minus 7 equals 8

n= -2

p is obviously zero because any number x plus 0 equals itself.

36

x=7

9y subtract 11 equals 7

It does not help you.

y=7+x =x=7-x

If n + 7 = 12, then n = 12 - 7

7+6

8+-1= 7 x=-1

v = -6

7

Can you help with this equation? Thanks. Solve for x and y and z for the following. x plus y plus z equals 9 x plus 2y plus 3z equals 23 x plus 5y plus -3z equals -7

7 times 12 = 84 plus 7 equals 91 inches.

4n/7 + 8 = 20 subtract 8 from each side: 4n/7 = 12 multiply each side by 7: 4n = 84 n = 21

25-7=18 18/3=6

Set up the equation and solve: 13 = 7 + s (next subtract 7 from each side of the equation to solve for s) 6 = s

x=-2

c= -2 2/7 OR -2.285714

It is not possible to solve a single linear equation in two variables.

You cannot solve one linear equation in two unknown variables.