Answer:
90
Step-by-step explanation:
Step 1:
2/5x + 10 = 30 Equation
Step 2:
2/5x = 20 Subtract 10 on both sides
Step 3:
x = 20 ÷ 2/5 Divide
Step 4:
x = 20 × 5/2 Multiply
x = 90
Hope This Helps :)