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(x+3) = 20
x = 20 - 3
x = 17
maka nilai x + 10 = 17 + 10 = 27
x + = 4
Kedua ruas dikurangi tiga per lima
x = 17/5 ( Empat dikurangi tiga per lima, maka samakan dulu penyebutnya)
x = 17/5 : 1/5
x= 17/5.5
x= 17
Nilai dari x+10 = 17 + 10 = 27