Question

5a-1=14. a=?

5x-9=3(x-2). x=?

4x+7=-7. x=?

n+2=3n+10. n=?

4x-8=-4(2x-3)+4. x=?​

Answer 1

5a-1=14

5a=14+1

5a=15

a=3

5x-9=3(x-2)

5x-9=3x-6

5x-3x=-6+9

2x=3

x=3/2

4x+7=-7

4x=-7-7

4x=-14

x=-2/7

n+2=3n+10

2-10=3n-n

-8=2n

n=-4

4x-8=-4(2x-3)+4

4x-8=-8x+12+4

4x+8x=12+4-8

12x=8

x=2/3