$5\ x\ =\ -\ 7\$

$5\ x\ =\ 7\$

$7\ x\ =\ -5\$

3

12

4

8

Y = 4 + X

Y = 4X

Y = 4X + 2

Y = X16

Y = X + 16

Y = X16 + 3

y=30+h

y=30h

y=30-h

v=200-d

v=200+d

v=200d

n=24p

n=24+p

n=24÷p

m=4b+0.18

m=0.18b+4

m=0.18b - 4