5. Simplify:2(4x + 3)-(7x + 6)
6. Find the perimeter of the metallic sheet below 6 3n 3n 5 7. Write an expression for the sum of one sixth of m and one-seventh of n, minus 7 8. Simplify 5-³ x 5⁴ x 2² 9. Find the L. C.M of 2x3², 2x3x7 and 2x3²x5 10. What is the place value of 4 in the number 2043507? 11. Find the G. C.F OF 18,42 and 90