Step-by-step explanation:
1) 3x - 4 = 86 + 24
→ 3x - 4 = 110
→ 3x = 110 + 4 = 114
→ x = 114/3 = 38
therefore, value of x is 38.
2) -10x = 30 + 90
→ -10x = 120
→ x = 120/10 = 12
→ x = 12
therefore, value of x is 12.
3) -8x + 23 + 51 = 130
→ -8x + 74 = 130
→ -8x = 130 - 74
→ -8x = 56
→ x = 56/8
→ x = 7
therefore, value of x is 7.
4) -9 + 2x = 59 + 90
→ -9 + 2x = 149
→ 2x = 149 + 9
→ 2x = 158
→ x = 158/2 = 79
→ x = 79
therefore, value of x is 79.
hope this answer helps you dear...take care !
