Answer:
20
Explanation:
Let's solve your equation step-by-step.
−13=−18+ w/ 4
Step 1: Simplify both sides of the equation.
−13=−18+ w/ 4
−13=−18+ 1/ 4 w
−13= 1/ 4 w−18
Step 2: Flip the equation.
1/ 4 w−18=−13
Step 3: Add 18 to both sides.
1/ 4 w−18+18=−13+18
1/ 4 w=5
Step 4: Multiply both sides by 4.
4*( 1/ 4 w)=(4)*(5)
w=20