Understand the equation: Understand the equation.The equation 4d=9 means that d divided by 4 equals 9. To find the value of d, we need to isolate d on one side of the equation.
Multiply by 4: Multiply both sides of the equation by 4.To isolate d, we multiply both sides of the equation by 4, which is the inverse operation of division by 4.(4d)⋅4=9⋅4
Simplify both sides: Simplify both sides of the equation.The multiplication on the left side simplifies because (4d)×4=d, and on the right side, 9×4=36.d=36
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