Question 1 7𝑥 + 3 = 18 7𝑥 + 3 − 3 = 18 − 3 7𝑥 = 15 7𝑥 15 = 7 7 𝑥 = 2 1 7 Question 2 3𝑦 − 13 = 10 3𝑦 − 13 + [ ] = 10 + [ ] 3𝑦 = [ ] [ ] 3𝑦 = 3 3 𝑦 = [ ] Question 3 3 𝑥 + 2 = 13 2 3 𝑥 + 2 − [ ] = 13 − [ ] 2 3 𝑥 = [ ] 2 3 2. ( 𝑥) = 2([ ]) 2 3𝑥 = [ ] [ ] 3𝑥 = 3 3 𝑥 = [ ] Question 4: 7𝑦 + 2 = 30 7𝑦 + 2 − [ ] = 30 − [ 7𝑦 = [ ] ] [ ] 7𝑦 = 7 7 𝑦 =[ ] Question 5: 4𝑥 − 17 = 6 ________________________________ ________________________________ ________________________________ ________________________________ Question 6 3𝑦 − 17 = 6 ________________________________ ________________________________ ________________________________ ________________________________ Question 7 3 𝑡 +1 = 7 2 ________________________________ ________________________________ ________________________________ ________________________________ Question 8 5𝑥 − 8 = 3𝑥 + 4 5𝑥 − 8 + 8 = 3𝑥 + 4 + 8 5𝑥 = 3𝑥 + 12 5𝑥 − 3𝑥 = 3𝑥 − 3𝑥 + 12 2𝑥 = 12 2𝑥 12 = 2 2 𝑥 = 6 Question 9 4𝑥 + 2 = −3𝑥 + 65 4𝑥 + 2 − [ ] = −3𝑥 + 65 − [ ] 4𝑥 + [ ]𝑥 = −3𝑥 + [ ] 𝑥 + 63 [ ] 𝑥 = 63 [ ]𝑥 63 = [ ] [ ] 𝑥 = 63 [ ] 𝑥 = Question 10 −8𝑥 + 2 = −10𝑥 + 10 −8𝑥 + 2 − [ ] = −10𝑥 + 10 − [ ] −8𝑥 = −10𝑥 + [ ] −8𝑥 + [ ]𝑥 = −10𝑥 + [ ]𝑥 + [ ] 2𝑥 = [ ] [ ] 2𝑥 = 2 2 𝑥 = [ ] Question 11 90𝑤 + 7 = 81𝑤 + 70 ______________________________ ______________________________ ______________________________ ______________________________ ______________________________ ______________________________ ______________________________ Question 12 −5𝑧 + 9 = −8𝑧 + 27 ______________________________ ______________________________ ______________________________ ______________________________ ______________________________ ______________________________ ______________________________ Question 13 −5𝑤 + 18 = −8𝑤 + 36 ______________________________ ______________________________ ______________________________ ______________________________ ______________________________ ______________________________ ______________________________