9000023901 Level: ASolve the following system and write the solution as the ordered pair [x,y]. x+y=−1x−y=5[2;−3][−2;1][3;−2][−3;2]
9000023803 Level: AIn the following list identify a true statement referring to the solution of the following equation. x+3=3+xThe difference of the bigger and smaller solutions is 1.The difference of the bigger and smaller solutions is −1.The difference of the smaller and the bigger solutions is 1.The difference of the smaller and twice the bigger solutions is −1.
9000023902 Level: ASolve the following system and write the solution as the ordered pair [x,y]. 2x+y=2x+2y=7[−1;4][2;−2][1;3][3;−4]
9000023804 Level: AIdentify a true statement which concerns to the following equation. x+3=x−3The solution is in the interval (5;8).The solution is in the interval [−2;2].The solution is in the interval [−3;1).The solution is in the interval [3;5).
9000023806 Level: AIdentify a true statement which concerns to the following equation. 3x+4=xThe solution divides 4.The solution divides 1.The solution divides 2.The solution divides 3.
9000023807 Level: AIdentify a true statement which concerns to the following equation. x+3=x2The solution is a multiple of 2.The solution is a multiple of 4.The solution is a multiple of 8.The solution is a multiple of 12.
9000023905 Level: ALet [x;y] be the solution of the system 2x+5y=7,−4x−3y=7. In the following list identify a true statement.x2+y2=25x2+y2=7x2−y2=−7y2−x2=7
9000023808 Level: AIdentify a true statement which concerns to the following equation. x+5=x+3The solution x satisfies |x|=1.The solution x satisfies |x|=2.The solution x satisfies |x|=3.The solution x satisfies |x|=4.