one variate the values of a and standard form 1. X-3=7 2. 2x + 1 = x 3. y - 12 -5 4. 3m - 5 5. 4z + 3-1-10

1. x-3=7, x=10
2. 2x+1=x, x=-1
3. y-12=5, y=17
4. 3m=5, m=5/3
5. 4z+3-1-10, 4(z-2)