Question Solve the system of equations Solve using the substitution method Solve using the elimination method (a,b)≈(0.528235,14) Evaluate {8a3b−18a=21b21b=7Solve the equation for b More Steps Evaluate 21b=7Multiply by the reciprocal 21b×2=7×2Multiply b=7×2Multiply b=14 {8a3b−18a=21bb=14Substitute the given value of b into the equation 8a3b−18a=21b 8a3×14−18a=21×14Simplify 112a3−18a=21×14Simplify More Steps Evaluate 21×14Reduce the numbers 1×7Simplify 7 112a3−18a=7Move the expression to the left side 112a3−18a−7=0Calculate a≈0.528235Calculate {a≈0.528235b=14Check the solution {a≈0.528235b=14Solution (a,b)≈(0.528235,14) Show Solution