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b. 4x +2 = 90
4x = 88
x = 22
c. 3x + 5 -> 3.22 + 5 = 71
x-3 -> 22 - 3 = 19
b . 4x+2=90
4x=88
x=22
c . 3x+5-》3.22+5=71
×-3-》22-3=18