If −8y−(y−5)=−13, then y=________
Expand: (1)(a+2)(a−1)(2) (m−4)(m+6)(3) (p+8)(p−3)(4) (13+x)(13−x)(5) (3x+4y)(3x+5y)(6) (9x−5t)(9x+3t)(7) (m+23)(m−73)(8) (x+1x)(x−1x)(9) (1y+4)(1y−9)
Solve: 0.5(5y−7)−2(9y−11)=0.25(8y−13)−534 [4 MARKS]
If 8x+13y8x−13y=97, find x : y
Verify each of the following :
(i) 37×−59=−59×37
(ii) −87×139=139×−87
(iii) −125×7−36=7−36×−125
(iv) −8×−1312=−1312×(−8)