Question

3p + (-q) -7r - (-8p) -q- 2r and find the value of the above expression when r= -5,p= -3 upon 2​

Answer 1

Answer:

q = ⁵⁶/₄

Step-by-step explanation:

when r= -5, p = -³/₂

3(-³/₂) + (-q) -7(-5) - (-8(-³/₂)) - q- 2(-5)

-⁹/₂ + (-q) + 35 - (²⁴/₂) - q + 10

-⁹/₂ - ²⁴/₂ + 35 + 10 - 2q

-³³/₂ + 45 - 2q

-16¹/₂ + 45 = 2q                                          I took -2q to the other side

28¹/₂ = 2q

⁵⁶/₂ = 2q

q = ⁵⁶/₂ ÷ 2 = ⁵⁶/₄