To find out which equation has a solution of -7, we can substitute -7 for x in each equation and see which one results in a true statement:
1) 5(-7) + 11 = -24
-35 + 11 = -24
-24 = -24
2) (-(-7)) + 3 = -4
7 + 3 = -4
10 = -4
3) -3(-7) - 8 = -29
21 - 8 = -29
13 = -29
4) 4(-7) - 23 = 5
-28 - 23 = 5
-51 = 5
Out of the four equations, only the first equation, 5x + 11 = -24, is true when x is substituted as -7.
Which of the following equations has a solution of -7
5x+11=-24
-x+3=-4
-3x-8=-29
4x-23=5
1 answer
1 answer