Please help me solve these and explain your answer I will give brainleist
15 − 3 − 12 − 9 = 9 + 13 − 7 − 7
10 − 2.8 = 5 + 2.2
3( − 7) = 69
5 + 12 − 3 + 2 = −7 + 3 − 6 − 4
−7(3 − 9) = −21
7( + 2) = 119
72 = 8( + 1)
4( + 7) = 52
[tex]-4x + \frac{3}{4} + 7x - \frac{1}{2} = 5x - 1 - 4x + \frac{1}{4}[/tex]
13 − 5 + 8 − 3 = 12 − 7 + 10 − 15