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We also use INVERSE OPERATIONS. The inverse of multiplication is division. The inverse of division is multiplication. The inverse of subtraction is addition. The inverse of addition is subtraction. Example 1 4 x ÷ 4x = 12 4 4 + x - 9 9 = = ÷ - 9 21 3 solution divide both sides by 4 subtract 9 from both sides Your turn! ÷ y = 5y - 15 = 20 5y = Fill in the missing numbers. + ÷ + Your turn! ÷ y = 3y + 8 = 23 3y = Fill in the missing numbers. − ÷ − Your turn! ÷ y = 4y - 1 = 15 4y = Fill in the missing numbers. + ÷ + Solve these two step equations. ÷ 6y + 7 = 37 6y = y = − ÷ − Solve these two step equations. ÷ 8y - 2 = 14 8y = y = + + ÷ Solve these two step equations. x 2 x 2 x = + 3 = 10 − = − Solve these two step equations. x 6 x 6 x = − 8 = 2 + = + Solve these two step equations. x 3 x 3 x = − 5 = 2 + = + Solve these two step equations. x 7 x 7 x = + 4 = 9 − = − |