53
With only one equation, you can't solve for either one. If you had another equation, you could calculate both of them.
It is an equation and the value of r is 66
3110 - 7x = x - 66 <- add -x to both sides 3110 - 8x = -66 <- multiply both sides by -1 8x - 3110 = 66 <- add 3110 to both sides 8x = 3176 <- divide both sides by 8 x = 397
There are 2 unknowns
8n-2+4n = 66-5n 8n+4n+5n = 66+2 17n = 68 n = 4
66 plus 66 equals 132
68
66 times 6 equals 396.
(-19+66)=(66-19)=47
f-18=48-10f 11f-18=48 11f=66 f=6
7x - 18 = 66, solve for x. First step is to add 18 to both sides. So 7x = 84. Now divide by sides by 7 to get x = 12