Which expression is equivalent to 63.56 + (–81.47)?

7x+8y=-18, 4x-9y=-3 solve the system of equations

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start

The first and second steps to solve the equation 3x/5 + 5 = 20.are shown below 3x/5 + 5 - 5 = 20 - 5 3x/5 (5/3) = 15 (5/3)a.addition property of equality b.subtraction property of equalityc.multiplication property of equalityd.division property of equality