Question

Solve for m.
5m + 3m - 8 = 64
a m = 9
b m = 2
c m = -2
d m = 5

Answer 1

`\Huge \boxed{m=9}`

Explanation:

`5m + 3m - 8 = 64`

Combining like terms.

`8m - 8 = 64`

Adding 8 to both sides.

`8m=72`

Dividing both sides by 8.

`m=9`

Answer 2

`\boxed{ \bold{ \huge{ \boxed{ \sf{m = 9}}}}}`

Option A is the correct option

Explanation:

`\sf{5m + 3m - 8 = 64}`

Collect like terms

⇒
`\sf{8m - 8 = 64}`

Move 8 to right hand side and change it's sign

⇒
`\sf{8m = 64 + 8}`

Add the numbers

⇒
`\sf{8m = 72}`

Divide both sides of the equation by 8

⇒
`\sf{ (8m)/(8) = (72)/(8) }`

Calculate

⇒
`\sf{m = 9}`

Hope I helped!

Best regards!!