Answer: w = 4
Explanation:
To solve the equation 10(w+3) = 70, we will work to get w by itself:
1. Divide by 10. This will get us closer to w.
(10( w + 3))/10 = 70/10
w + 3 = 7
2. We now have the equation w + 3 = 7. All we need to do now to get w by itself (or isolate it) is to subtract 3.
(w + 3) - 3 = 7 - 3
w = 7 - 3
w = 4
3. We can check our solution by inputting our found value, w = 4, into the equation.
10( 4 + 3 ) = 70
10(7) = 70
70=70
Because both sides of the equation are true, our solution of w = 4 is correct.