Question

0.4r − 0.13 − 0.7r = 3r − 5.74

Answer 1

• 0.4r - 0.13 - 0.7r = 3r - 5.74
• 0.4r - 0.7r - 3r = - 5.74 + 0.13
• -3. 3r = 5.61
• -r = $\frac{5.61}{3.3}$
• -r = 1.7
• r = -1.7 or -$\frac{17}{10}$

Answer 2

• 0.4r − 0.13 − 0.7r = 3r − 5.74
• 0.4r - 0.3r - 3r = -5.74 + 0.13
• -3.3r = -5.61
• 3.3r = 5.61
• r = 1.7