b,\(317-\left(4x+11\right):3=20\\ 317-\left(4x+11\right)=20.3\\ 317-\left(4x+11\right)=60\\ 4x+11=317-60\\ 4x+11=257\\ 4x=257-11\\ 4x=246\\ x=61,5\)
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a, x=27-126
x=-99
b,317−(4x+11):3=20317−(4x+11)=20.3317−(4x+11)=604x+11=317−604x+11=2574x=257−114x=246x=61,5
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