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Step-by-step explanation:
[tex]x + 22 + 3x = 90[/tex]
[tex]4x = 9 0- 22 \\ 4x = 68 \\ x = 17[/tex]
M1
[tex]17 + 22 = 39[/tex]
M2
[tex]3 \times 17 = \\ = 51[/tex]